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Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
74# endif
75
76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
78# define EV_USE_SELECT 1
79# else 95# else
96# undef EV_USE_SELECT
80# define EV_USE_SELECT 0 97# define EV_USE_SELECT 0
98# endif
99
100# if HAVE_POLL && HAVE_POLL_H
101# ifndef EV_USE_POLL
102# define EV_USE_POLL EV_FEATURE_BACKENDS
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
107# endif
108
109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
110# ifndef EV_USE_EPOLL
111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
89# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
90# endif 116# endif
91 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
92# ifndef EV_USE_EPOLL 119# ifndef EV_USE_KQUEUE
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
98# endif 125# endif
99 126
100# ifndef EV_USE_KQUEUE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 128# ifndef EV_USE_PORT
102# define EV_USE_KQUEUE 1 129# define EV_USE_PORT EV_FEATURE_BACKENDS
103# else
104# define EV_USE_KQUEUE 0
105# endif 130# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else 131# else
132# undef EV_USE_PORT
112# define EV_USE_PORT 0 133# define EV_USE_PORT 0
134# endif
135
136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
137# ifndef EV_USE_INOTIFY
138# define EV_USE_INOTIFY EV_FEATURE_OS
113# endif 139# endif
114# endif
115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else 140# else
141# undef EV_USE_INOTIFY
120# define EV_USE_INOTIFY 0 142# define EV_USE_INOTIFY 0
143# endif
144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD EV_FEATURE_OS
121# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
122# endif 152# endif
123 153
154# if HAVE_EVENTFD
124# ifndef EV_USE_EVENTFD 155# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 156# define EV_USE_EVENTFD EV_FEATURE_OS
127# else
128# define EV_USE_EVENTFD 0
129# endif 157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
160# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 194# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
164# endif 197# endif
198# undef EV_AVOID_STDIO
165#endif 199#endif
166 200
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 201/* this block tries to deduce configuration from header-defined symbols and defaults */
202
203/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG)
205/* use what's provided */
206#elif defined (NSIG)
207# define EV_NSIG (NSIG)
208#elif defined(_NSIG)
209# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX)
211# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX)
213# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX)
215# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG)
217# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG)
219# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE)
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig)
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else
225# error "unable to find value for NSIG, please report"
226/* to make it compile regardless, just remove the above line, */
227/* but consider reporting it, too! :) */
228# define EV_NSIG 65
229#endif
230
231#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else
235# define EV_USE_CLOCK_SYSCALL 0
236# endif
237#endif
168 238
169#ifndef EV_USE_MONOTONIC 239#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 241# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 242# else
173# define EV_USE_MONOTONIC 0 243# define EV_USE_MONOTONIC 0
174# endif 244# endif
175#endif 245#endif
176 246
177#ifndef EV_USE_REALTIME 247#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 248# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 249#endif
180 250
181#ifndef EV_USE_NANOSLEEP 251#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 252# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 253# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 254# else
185# define EV_USE_NANOSLEEP 0 255# define EV_USE_NANOSLEEP 0
186# endif 256# endif
187#endif 257#endif
188 258
189#ifndef EV_USE_SELECT 259#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 260# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 261#endif
192 262
193#ifndef EV_USE_POLL 263#ifndef EV_USE_POLL
194# ifdef _WIN32 264# ifdef _WIN32
195# define EV_USE_POLL 0 265# define EV_USE_POLL 0
196# else 266# else
197# define EV_USE_POLL 1 267# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 268# endif
199#endif 269#endif
200 270
201#ifndef EV_USE_EPOLL 271#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 273# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 274# else
205# define EV_USE_EPOLL 0 275# define EV_USE_EPOLL 0
206# endif 276# endif
207#endif 277#endif
208 278
… …
214# define EV_USE_PORT 0 284# define EV_USE_PORT 0
215#endif 285#endif
216 286
217#ifndef EV_USE_INOTIFY 287#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 289# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 290# else
221# define EV_USE_INOTIFY 0 291# define EV_USE_INOTIFY 0
222# endif 292# endif
223#endif 293#endif
224 294
225#ifndef EV_PID_HASHSIZE 295#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 296# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 297#endif
232 298
233#ifndef EV_INOTIFY_HASHSIZE 299#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 300# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 301#endif
240 302
241#ifndef EV_USE_EVENTFD 303#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 304# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 305# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 306# else
245# define EV_USE_EVENTFD 0 307# define EV_USE_EVENTFD 0
308# endif
309#endif
310
311#ifndef EV_USE_SIGNALFD
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
313# define EV_USE_SIGNALFD EV_FEATURE_OS
314# else
315# define EV_USE_SIGNALFD 0
246# endif 316# endif
247#endif 317#endif
248 318
249#if 0 /* debugging */ 319#if 0 /* debugging */
250# define EV_VERIFY 3 320# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 321# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 322# define EV_HEAP_CACHE_AT 1
253#endif 323#endif
254 324
255#ifndef EV_VERIFY 325#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 326# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 327#endif
258 328
259#ifndef EV_USE_4HEAP 329#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 330# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 331#endif
262 332
263#ifndef EV_HEAP_CACHE_AT 333#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif
336
337/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
338/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h>
341# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1
345# else
346# undef EV_USE_CLOCK_SYSCALL
347# define EV_USE_CLOCK_SYSCALL 0
348# endif
265#endif 349#endif
266 350
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 351/* this block fixes any misconfiguration where we know we run into trouble otherwise */
352
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
268 358
269#ifndef CLOCK_MONOTONIC 359#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 360# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 361# define EV_USE_MONOTONIC 0
272#endif 362#endif
… …
303#endif 393#endif
304 394
305#if EV_USE_EVENTFD 395#if EV_USE_EVENTFD
306/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 396/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
307# include <stdint.h> 397# include <stdint.h>
398# ifndef EFD_NONBLOCK
399# define EFD_NONBLOCK O_NONBLOCK
400# endif
401# ifndef EFD_CLOEXEC
402# ifdef O_CLOEXEC
403# define EFD_CLOEXEC O_CLOEXEC
404# else
405# define EFD_CLOEXEC 02000000
406# endif
407# endif
308# ifdef __cplusplus 408# ifdef __cplusplus
309extern "C" { 409extern "C" {
310# endif 410# endif
311int eventfd (unsigned int initval, int flags); 411int (eventfd) (unsigned int initval, int flags);
312# ifdef __cplusplus 412# ifdef __cplusplus
313} 413}
314# endif 414# endif
315#endif 415#endif
316 416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags);
434
435struct signalfd_siginfo
436{
437 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)];
439};
440# ifdef __cplusplus
441}
442# endif
443#endif
444
445
317/**/ 446/**/
318 447
319#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
320# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
321#else 450#else
322# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
323#endif 452#endif
324 453
325/* 454/*
… …
332 */ 461 */
333#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
334 463
335#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
336#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 465#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
337/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
338 466
339#if __GNUC__ >= 4 467#if __GNUC__ >= 4
340# define expect(expr,value) __builtin_expect ((expr),(value)) 468# define expect(expr,value) __builtin_expect ((expr),(value))
341# define noinline __attribute__ ((noinline)) 469# define noinline __attribute__ ((noinline))
342#else 470#else
… …
349 477
350#define expect_false(expr) expect ((expr) != 0, 0) 478#define expect_false(expr) expect ((expr) != 0, 0)
351#define expect_true(expr) expect ((expr) != 0, 1) 479#define expect_true(expr) expect ((expr) != 0, 1)
352#define inline_size static inline 480#define inline_size static inline
353 481
354#if EV_MINIMAL 482#if EV_FEATURE_CODE
483# define inline_speed static inline
484#else
355# define inline_speed static noinline 485# define inline_speed static noinline
486#endif
487
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
489
490#if EV_MINPRI == EV_MAXPRI
491# define ABSPRI(w) (((W)w), 0)
356#else 492#else
357# define inline_speed static inline
358#endif
359
360#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
361#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif
362 495
363#define EMPTY /* required for microsofts broken pseudo-c compiler */ 496#define EMPTY /* required for microsofts broken pseudo-c compiler */
364#define EMPTY2(a,b) /* used to suppress some warnings */ 497#define EMPTY2(a,b) /* used to suppress some warnings */
365 498
366typedef ev_watcher *W; 499typedef ev_watcher *W;
… …
368typedef ev_watcher_time *WT; 501typedef ev_watcher_time *WT;
369 502
370#define ev_active(w) ((W)(w))->active 503#define ev_active(w) ((W)(w))->active
371#define ev_at(w) ((WT)(w))->at 504#define ev_at(w) ((WT)(w))->at
372 505
373#if EV_USE_MONOTONIC 506#if EV_USE_REALTIME
374/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 507/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375/* giving it a reasonably high chance of working on typical architetcures */ 508/* giving it a reasonably high chance of working on typical architetcures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif
511
512#if EV_USE_MONOTONIC
376static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
514#endif
515
516#ifndef EV_FD_TO_WIN32_HANDLE
517# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
518#endif
519#ifndef EV_WIN32_HANDLE_TO_FD
520# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
521#endif
522#ifndef EV_WIN32_CLOSE_FD
523# define EV_WIN32_CLOSE_FD(fd) close (fd)
377#endif 524#endif
378 525
379#ifdef _WIN32 526#ifdef _WIN32
380# include "ev_win32.c" 527# include "ev_win32.c"
381#endif 528#endif
382 529
383/*****************************************************************************/ 530/*****************************************************************************/
531
532#if EV_AVOID_STDIO
533static void noinline
534ev_printerr (const char *msg)
535{
536 write (STDERR_FILENO, msg, strlen (msg));
537}
538#endif
384 539
385static void (*syserr_cb)(const char *msg); 540static void (*syserr_cb)(const char *msg);
386 541
387void 542void
388ev_set_syserr_cb (void (*cb)(const char *msg)) 543ev_set_syserr_cb (void (*cb)(const char *msg))
… …
398 553
399 if (syserr_cb) 554 if (syserr_cb)
400 syserr_cb (msg); 555 syserr_cb (msg);
401 else 556 else
402 { 557 {
558#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg);
562 ev_printerr (": ");
563 ev_printerr (err);
564 ev_printerr ("\n");
565#else
403 perror (msg); 566 perror (msg);
567#endif
404 abort (); 568 abort ();
405 } 569 }
406} 570}
407 571
408static void * 572static void *
409ev_realloc_emul (void *ptr, long size) 573ev_realloc_emul (void *ptr, long size)
410{ 574{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
411 /* some systems, notably openbsd and darwin, fail to properly 578 /* some systems, notably openbsd and darwin, fail to properly
412 * implement realloc (x, 0) (as required by both ansi c-98 and 579 * implement realloc (x, 0) (as required by both ansi c-89 and
413 * the single unix specification, so work around them here. 580 * the single unix specification, so work around them here.
414 */ 581 */
415 582
416 if (size) 583 if (size)
417 return realloc (ptr, size); 584 return realloc (ptr, size);
418 585
419 free (ptr); 586 free (ptr);
420 return 0; 587 return 0;
588#endif
421} 589}
422 590
423static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
424 592
425void 593void
… …
433{ 601{
434 ptr = alloc (ptr, size); 602 ptr = alloc (ptr, size);
435 603
436 if (!ptr && size) 604 if (!ptr && size)
437 { 605 {
606#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n");
608#else
438 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
610#endif
439 abort (); 611 abort ();
440 } 612 }
441 613
442 return ptr; 614 return ptr;
443} 615}
… …
445#define ev_malloc(size) ev_realloc (0, (size)) 617#define ev_malloc(size) ev_realloc (0, (size))
446#define ev_free(ptr) ev_realloc ((ptr), 0) 618#define ev_free(ptr) ev_realloc ((ptr), 0)
447 619
448/*****************************************************************************/ 620/*****************************************************************************/
449 621
622/* set in reify when reification needed */
623#define EV_ANFD_REIFY 1
624
625/* file descriptor info structure */
450typedef struct 626typedef struct
451{ 627{
452 WL head; 628 WL head;
453 unsigned char events; 629 unsigned char events; /* the events watched for */
454 unsigned char reify; 630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
455 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456 unsigned char unused; 632 unsigned char unused;
457#if EV_USE_EPOLL 633#if EV_USE_EPOLL
458 unsigned int egen; /* generation counter to counter epoll bugs */ 634 unsigned int egen; /* generation counter to counter epoll bugs */
459#endif 635#endif
460#if EV_SELECT_IS_WINSOCKET 636#if EV_SELECT_IS_WINSOCKET
461 SOCKET handle; 637 SOCKET handle;
462#endif 638#endif
463} ANFD; 639} ANFD;
464 640
641/* stores the pending event set for a given watcher */
465typedef struct 642typedef struct
466{ 643{
467 W w; 644 W w;
468 int events; 645 int events; /* the pending event set for the given watcher */
469} ANPENDING; 646} ANPENDING;
470 647
471#if EV_USE_INOTIFY 648#if EV_USE_INOTIFY
472/* hash table entry per inotify-id */ 649/* hash table entry per inotify-id */
473typedef struct 650typedef struct
… …
476} ANFS; 653} ANFS;
477#endif 654#endif
478 655
479/* Heap Entry */ 656/* Heap Entry */
480#if EV_HEAP_CACHE_AT 657#if EV_HEAP_CACHE_AT
658 /* a heap element */
481 typedef struct { 659 typedef struct {
482 ev_tstamp at; 660 ev_tstamp at;
483 WT w; 661 WT w;
484 } ANHE; 662 } ANHE;
485 663
486 #define ANHE_w(he) (he).w /* access watcher, read-write */ 664 #define ANHE_w(he) (he).w /* access watcher, read-write */
487 #define ANHE_at(he) (he).at /* access cached at, read-only */ 665 #define ANHE_at(he) (he).at /* access cached at, read-only */
488 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 666 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489#else 667#else
668 /* a heap element */
490 typedef WT ANHE; 669 typedef WT ANHE;
491 670
492 #define ANHE_w(he) (he) 671 #define ANHE_w(he) (he)
493 #define ANHE_at(he) (he)->at 672 #define ANHE_at(he) (he)->at
494 #define ANHE_at_cache(he) 673 #define ANHE_at_cache(he)
… …
518 697
519 static int ev_default_loop_ptr; 698 static int ev_default_loop_ptr;
520 699
521#endif 700#endif
522 701
702#if EV_FEATURE_API
703# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
704# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
705# define EV_INVOKE_PENDING invoke_cb (EV_A)
706#else
707# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif
711
712#define EVUNLOOP_RECURSE 0x80
713
523/*****************************************************************************/ 714/*****************************************************************************/
524 715
716#ifndef EV_HAVE_EV_TIME
525ev_tstamp 717ev_tstamp
526ev_time (void) 718ev_time (void)
527{ 719{
528#if EV_USE_REALTIME 720#if EV_USE_REALTIME
721 if (expect_true (have_realtime))
722 {
529 struct timespec ts; 723 struct timespec ts;
530 clock_gettime (CLOCK_REALTIME, &ts); 724 clock_gettime (CLOCK_REALTIME, &ts);
531 return ts.tv_sec + ts.tv_nsec * 1e-9; 725 return ts.tv_sec + ts.tv_nsec * 1e-9;
532#else 726 }
727#endif
728
533 struct timeval tv; 729 struct timeval tv;
534 gettimeofday (&tv, 0); 730 gettimeofday (&tv, 0);
535 return tv.tv_sec + tv.tv_usec * 1e-6; 731 return tv.tv_sec + tv.tv_usec * 1e-6;
536#endif
537} 732}
733#endif
538 734
539ev_tstamp inline_size 735inline_size ev_tstamp
540get_clock (void) 736get_clock (void)
541{ 737{
542#if EV_USE_MONOTONIC 738#if EV_USE_MONOTONIC
543 if (expect_true (have_monotonic)) 739 if (expect_true (have_monotonic))
544 { 740 {
… …
578 774
579 tv.tv_sec = (time_t)delay; 775 tv.tv_sec = (time_t)delay;
580 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581 777
582 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 779 /* something not guaranteed by newer posix versions, but guaranteed */
584 /* by older ones */ 780 /* by older ones */
585 select (0, 0, 0, 0, &tv); 781 select (0, 0, 0, 0, &tv);
586#endif 782#endif
587 } 783 }
588} 784}
589 785
590/*****************************************************************************/ 786/*****************************************************************************/
591 787
592#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593 789
594int inline_size 790/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */
792inline_size int
595array_nextsize (int elem, int cur, int cnt) 793array_nextsize (int elem, int cur, int cnt)
596{ 794{
597 int ncur = cur + 1; 795 int ncur = cur + 1;
598 796
599 do 797 do
… …
640 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 838 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641 } 839 }
642#endif 840#endif
643 841
644#define array_free(stem, idx) \ 842#define array_free(stem, idx) \
645 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 843 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646 844
647/*****************************************************************************/ 845/*****************************************************************************/
846
847/* dummy callback for pending events */
848static void noinline
849pendingcb (EV_P_ ev_prepare *w, int revents)
850{
851}
648 852
649void noinline 853void noinline
650ev_feed_event (EV_P_ void *w, int revents) 854ev_feed_event (EV_P_ void *w, int revents)
651{ 855{
652 W w_ = (W)w; 856 W w_ = (W)w;
… …
661 pendings [pri][w_->pending - 1].w = w_; 865 pendings [pri][w_->pending - 1].w = w_;
662 pendings [pri][w_->pending - 1].events = revents; 866 pendings [pri][w_->pending - 1].events = revents;
663 } 867 }
664} 868}
665 869
666void inline_speed 870inline_speed void
871feed_reverse (EV_P_ W w)
872{
873 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
874 rfeeds [rfeedcnt++] = w;
875}
876
877inline_size void
878feed_reverse_done (EV_P_ int revents)
879{
880 do
881 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
882 while (rfeedcnt);
883}
884
885inline_speed void
667queue_events (EV_P_ W *events, int eventcnt, int type) 886queue_events (EV_P_ W *events, int eventcnt, int type)
668{ 887{
669 int i; 888 int i;
670 889
671 for (i = 0; i < eventcnt; ++i) 890 for (i = 0; i < eventcnt; ++i)
672 ev_feed_event (EV_A_ events [i], type); 891 ev_feed_event (EV_A_ events [i], type);
673} 892}
674 893
675/*****************************************************************************/ 894/*****************************************************************************/
676 895
677void inline_speed 896inline_speed void
678fd_event (EV_P_ int fd, int revents) 897fd_event_nocheck (EV_P_ int fd, int revents)
679{ 898{
680 ANFD *anfd = anfds + fd; 899 ANFD *anfd = anfds + fd;
681 ev_io *w; 900 ev_io *w;
682 901
683 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 902 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
687 if (ev) 906 if (ev)
688 ev_feed_event (EV_A_ (W)w, ev); 907 ev_feed_event (EV_A_ (W)w, ev);
689 } 908 }
690} 909}
691 910
911/* do not submit kernel events for fds that have reify set */
912/* because that means they changed while we were polling for new events */
913inline_speed void
914fd_event (EV_P_ int fd, int revents)
915{
916 ANFD *anfd = anfds + fd;
917
918 if (expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents);
920}
921
692void 922void
693ev_feed_fd_event (EV_P_ int fd, int revents) 923ev_feed_fd_event (EV_P_ int fd, int revents)
694{ 924{
695 if (fd >= 0 && fd < anfdmax) 925 if (fd >= 0 && fd < anfdmax)
696 fd_event (EV_A_ fd, revents); 926 fd_event_nocheck (EV_A_ fd, revents);
697} 927}
698 928
699void inline_size 929/* make sure the external fd watch events are in-sync */
930/* with the kernel/libev internal state */
931inline_size void
700fd_reify (EV_P) 932fd_reify (EV_P)
701{ 933{
702 int i; 934 int i;
703 935
704 for (i = 0; i < fdchangecnt; ++i) 936 for (i = 0; i < fdchangecnt; ++i)
… …
714 946
715#if EV_SELECT_IS_WINSOCKET 947#if EV_SELECT_IS_WINSOCKET
716 if (events) 948 if (events)
717 { 949 {
718 unsigned long arg; 950 unsigned long arg;
719 #ifdef EV_FD_TO_WIN32_HANDLE
720 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721 #else
722 anfd->handle = _get_osfhandle (fd);
723 #endif
724 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
725 } 953 }
726#endif 954#endif
727 955
728 { 956 {
729 unsigned char o_events = anfd->events; 957 unsigned char o_events = anfd->events;
730 unsigned char o_reify = anfd->reify; 958 unsigned char o_reify = anfd->reify;
731 959
732 anfd->reify = 0; 960 anfd->reify = 0;
733 anfd->events = events; 961 anfd->events = events;
734 962
735 if (o_events != events || o_reify & EV_IOFDSET) 963 if (o_events != events || o_reify & EV__IOFDSET)
736 backend_modify (EV_A_ fd, o_events, events); 964 backend_modify (EV_A_ fd, o_events, events);
737 } 965 }
738 } 966 }
739 967
740 fdchangecnt = 0; 968 fdchangecnt = 0;
741} 969}
742 970
743void inline_size 971/* something about the given fd changed */
972inline_size void
744fd_change (EV_P_ int fd, int flags) 973fd_change (EV_P_ int fd, int flags)
745{ 974{
746 unsigned char reify = anfds [fd].reify; 975 unsigned char reify = anfds [fd].reify;
747 anfds [fd].reify |= flags; 976 anfds [fd].reify |= flags;
748 977
… …
752 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753 fdchanges [fdchangecnt - 1] = fd; 982 fdchanges [fdchangecnt - 1] = fd;
754 } 983 }
755} 984}
756 985
757void inline_speed 986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void
758fd_kill (EV_P_ int fd) 988fd_kill (EV_P_ int fd)
759{ 989{
760 ev_io *w; 990 ev_io *w;
761 991
762 while ((w = (ev_io *)anfds [fd].head)) 992 while ((w = (ev_io *)anfds [fd].head))
… …
764 ev_io_stop (EV_A_ w); 994 ev_io_stop (EV_A_ w);
765 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766 } 996 }
767} 997}
768 998
769int inline_size 999/* check whether the given fd is actually valid, for error recovery */
1000inline_size int
770fd_valid (int fd) 1001fd_valid (int fd)
771{ 1002{
772#ifdef _WIN32 1003#ifdef _WIN32
773 return _get_osfhandle (fd) != -1; 1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
774#else 1005#else
775 return fcntl (fd, F_GETFD) != -1; 1006 return fcntl (fd, F_GETFD) != -1;
776#endif 1007#endif
777} 1008}
778 1009
… …
796 1027
797 for (fd = anfdmax; fd--; ) 1028 for (fd = anfdmax; fd--; )
798 if (anfds [fd].events) 1029 if (anfds [fd].events)
799 { 1030 {
800 fd_kill (EV_A_ fd); 1031 fd_kill (EV_A_ fd);
801 return; 1032 break;
802 } 1033 }
803} 1034}
804 1035
805/* usually called after fork if backend needs to re-arm all fds from scratch */ 1036/* usually called after fork if backend needs to re-arm all fds from scratch */
806static void noinline 1037static void noinline
… …
811 for (fd = 0; fd < anfdmax; ++fd) 1042 for (fd = 0; fd < anfdmax; ++fd)
812 if (anfds [fd].events) 1043 if (anfds [fd].events)
813 { 1044 {
814 anfds [fd].events = 0; 1045 anfds [fd].events = 0;
815 anfds [fd].emask = 0; 1046 anfds [fd].emask = 0;
816 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1047 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817 } 1048 }
1049}
1050
1051/* used to prepare libev internal fd's */
1052/* this is not fork-safe */
1053inline_speed void
1054fd_intern (int fd)
1055{
1056#ifdef _WIN32
1057 unsigned long arg = 1;
1058 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1059#else
1060 fcntl (fd, F_SETFD, FD_CLOEXEC);
1061 fcntl (fd, F_SETFL, O_NONBLOCK);
1062#endif
818} 1063}
819 1064
820/*****************************************************************************/ 1065/*****************************************************************************/
821 1066
822/* 1067/*
… …
837#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1082#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1083#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839#define UPHEAP_DONE(p,k) ((p) == (k)) 1084#define UPHEAP_DONE(p,k) ((p) == (k))
840 1085
841/* away from the root */ 1086/* away from the root */
842void inline_speed 1087inline_speed void
843downheap (ANHE *heap, int N, int k) 1088downheap (ANHE *heap, int N, int k)
844{ 1089{
845 ANHE he = heap [k]; 1090 ANHE he = heap [k];
846 ANHE *E = heap + N + HEAP0; 1091 ANHE *E = heap + N + HEAP0;
847 1092
… …
887#define HEAP0 1 1132#define HEAP0 1
888#define HPARENT(k) ((k) >> 1) 1133#define HPARENT(k) ((k) >> 1)
889#define UPHEAP_DONE(p,k) (!(p)) 1134#define UPHEAP_DONE(p,k) (!(p))
890 1135
891/* away from the root */ 1136/* away from the root */
892void inline_speed 1137inline_speed void
893downheap (ANHE *heap, int N, int k) 1138downheap (ANHE *heap, int N, int k)
894{ 1139{
895 ANHE he = heap [k]; 1140 ANHE he = heap [k];
896 1141
897 for (;;) 1142 for (;;)
898 { 1143 {
899 int c = k << 1; 1144 int c = k << 1;
900 1145
901 if (c > N + HEAP0 - 1) 1146 if (c >= N + HEAP0)
902 break; 1147 break;
903 1148
904 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1149 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
905 ? 1 : 0; 1150 ? 1 : 0;
906 1151
… …
917 ev_active (ANHE_w (he)) = k; 1162 ev_active (ANHE_w (he)) = k;
918} 1163}
919#endif 1164#endif
920 1165
921/* towards the root */ 1166/* towards the root */
922void inline_speed 1167inline_speed void
923upheap (ANHE *heap, int k) 1168upheap (ANHE *heap, int k)
924{ 1169{
925 ANHE he = heap [k]; 1170 ANHE he = heap [k];
926 1171
927 for (;;) 1172 for (;;)
… …
938 1183
939 heap [k] = he; 1184 heap [k] = he;
940 ev_active (ANHE_w (he)) = k; 1185 ev_active (ANHE_w (he)) = k;
941} 1186}
942 1187
943void inline_size 1188/* move an element suitably so it is in a correct place */
1189inline_size void
944adjustheap (ANHE *heap, int N, int k) 1190adjustheap (ANHE *heap, int N, int k)
945{ 1191{
946 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1192 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
947 upheap (heap, k); 1193 upheap (heap, k);
948 else 1194 else
949 downheap (heap, N, k); 1195 downheap (heap, N, k);
950} 1196}
951 1197
952/* rebuild the heap: this function is used only once and executed rarely */ 1198/* rebuild the heap: this function is used only once and executed rarely */
953void inline_size 1199inline_size void
954reheap (ANHE *heap, int N) 1200reheap (ANHE *heap, int N)
955{ 1201{
956 int i; 1202 int i;
957 1203
958 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1204 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
961 upheap (heap, i + HEAP0); 1207 upheap (heap, i + HEAP0);
962} 1208}
963 1209
964/*****************************************************************************/ 1210/*****************************************************************************/
965 1211
1212/* associate signal watchers to a signal signal */
966typedef struct 1213typedef struct
967{ 1214{
1215 EV_ATOMIC_T pending;
1216#if EV_MULTIPLICITY
1217 EV_P;
1218#endif
968 WL head; 1219 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1220} ANSIG;
971 1221
972static ANSIG *signals; 1222static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976 1223
977/*****************************************************************************/ 1224/*****************************************************************************/
978 1225
979void inline_speed 1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
980fd_intern (int fd)
981{
982#ifdef _WIN32
983 unsigned long arg = 1;
984 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
985#else
986 fcntl (fd, F_SETFD, FD_CLOEXEC);
987 fcntl (fd, F_SETFL, O_NONBLOCK);
988#endif
989}
990 1227
991static void noinline 1228static void noinline
992evpipe_init (EV_P) 1229evpipe_init (EV_P)
993{ 1230{
994 if (!ev_is_active (&pipeev)) 1231 if (!ev_is_active (&pipe_w))
995 { 1232 {
996#if EV_USE_EVENTFD 1233# if EV_USE_EVENTFD
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL)
997 if ((evfd = eventfd (0, 0)) >= 0) 1236 evfd = eventfd (0, 0);
1237
1238 if (evfd >= 0)
998 { 1239 {
999 evpipe [0] = -1; 1240 evpipe [0] = -1;
1000 fd_intern (evfd); 1241 fd_intern (evfd); /* doing it twice doesn't hurt */
1001 ev_io_set (&pipeev, evfd, EV_READ); 1242 ev_io_set (&pipe_w, evfd, EV_READ);
1002 } 1243 }
1003 else 1244 else
1004#endif 1245# endif
1005 { 1246 {
1006 while (pipe (evpipe)) 1247 while (pipe (evpipe))
1007 ev_syserr ("(libev) error creating signal/async pipe"); 1248 ev_syserr ("(libev) error creating signal/async pipe");
1008 1249
1009 fd_intern (evpipe [0]); 1250 fd_intern (evpipe [0]);
1010 fd_intern (evpipe [1]); 1251 fd_intern (evpipe [1]);
1011 ev_io_set (&pipeev, evpipe [0], EV_READ); 1252 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012 } 1253 }
1013 1254
1014 ev_io_start (EV_A_ &pipeev); 1255 ev_io_start (EV_A_ &pipe_w);
1015 ev_unref (EV_A); /* watcher should not keep loop alive */ 1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1016 } 1257 }
1017} 1258}
1018 1259
1019void inline_size 1260inline_size void
1020evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021{ 1262{
1022 if (!*flag) 1263 if (!*flag)
1023 { 1264 {
1024 int old_errno = errno; /* save errno because write might clobber it */ 1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1025 1267
1026 *flag = 1; 1268 *flag = 1;
1027 1269
1028#if EV_USE_EVENTFD 1270#if EV_USE_EVENTFD
1029 if (evfd >= 0) 1271 if (evfd >= 0)
… …
1031 uint64_t counter = 1; 1273 uint64_t counter = 1;
1032 write (evfd, &counter, sizeof (uint64_t)); 1274 write (evfd, &counter, sizeof (uint64_t));
1033 } 1275 }
1034 else 1276 else
1035#endif 1277#endif
1036 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1037 1279
1038 errno = old_errno; 1280 errno = old_errno;
1039 } 1281 }
1040} 1282}
1041 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1042static void 1286static void
1043pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1044{ 1288{
1289 int i;
1290
1045#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1046 if (evfd >= 0) 1292 if (evfd >= 0)
1047 { 1293 {
1048 uint64_t counter; 1294 uint64_t counter;
1049 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
… …
1053 { 1299 {
1054 char dummy; 1300 char dummy;
1055 read (evpipe [0], &dummy, 1); 1301 read (evpipe [0], &dummy, 1);
1056 } 1302 }
1057 1303
1058 if (gotsig && ev_is_default_loop (EV_A)) 1304 if (sig_pending)
1059 { 1305 {
1060 int signum; 1306 sig_pending = 0;
1061 gotsig = 0;
1062 1307
1063 for (signum = signalmax; signum--; ) 1308 for (i = EV_NSIG - 1; i--; )
1064 if (signals [signum].gotsig) 1309 if (expect_false (signals [i].pending))
1065 ev_feed_signal_event (EV_A_ signum + 1); 1310 ev_feed_signal_event (EV_A_ i + 1);
1066 } 1311 }
1067 1312
1068#if EV_ASYNC_ENABLE 1313#if EV_ASYNC_ENABLE
1069 if (gotasync) 1314 if (async_pending)
1070 { 1315 {
1071 int i; 1316 async_pending = 0;
1072 gotasync = 0;
1073 1317
1074 for (i = asynccnt; i--; ) 1318 for (i = asynccnt; i--; )
1075 if (asyncs [i]->sent) 1319 if (asyncs [i]->sent)
1076 { 1320 {
1077 asyncs [i]->sent = 0; 1321 asyncs [i]->sent = 0;
… …
1085 1329
1086static void 1330static void
1087ev_sighandler (int signum) 1331ev_sighandler (int signum)
1088{ 1332{
1089#if EV_MULTIPLICITY 1333#if EV_MULTIPLICITY
1090 struct ev_loop *loop = &default_loop_struct; 1334 EV_P = signals [signum - 1].loop;
1091#endif 1335#endif
1092 1336
1093#if _WIN32 1337#ifdef _WIN32
1094 signal (signum, ev_sighandler); 1338 signal (signum, ev_sighandler);
1095#endif 1339#endif
1096 1340
1097 signals [signum - 1].gotsig = 1; 1341 signals [signum - 1].pending = 1;
1098 evpipe_write (EV_A_ &gotsig); 1342 evpipe_write (EV_A_ &sig_pending);
1099} 1343}
1100 1344
1101void noinline 1345void noinline
1102ev_feed_signal_event (EV_P_ int signum) 1346ev_feed_signal_event (EV_P_ int signum)
1103{ 1347{
1104 WL w; 1348 WL w;
1105 1349
1350 if (expect_false (signum <= 0 || signum > EV_NSIG))
1351 return;
1352
1353 --signum;
1354
1106#if EV_MULTIPLICITY 1355#if EV_MULTIPLICITY
1107 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1356 /* it is permissible to try to feed a signal to the wrong loop */
1108#endif 1357 /* or, likely more useful, feeding a signal nobody is waiting for */
1109 1358
1110 --signum; 1359 if (expect_false (signals [signum].loop != EV_A))
1111
1112 if (signum < 0 || signum >= signalmax)
1113 return; 1360 return;
1361#endif
1114 1362
1115 signals [signum].gotsig = 0; 1363 signals [signum].pending = 0;
1116 1364
1117 for (w = signals [signum].head; w; w = w->next) 1365 for (w = signals [signum].head; w; w = w->next)
1118 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1119} 1367}
1120 1368
1369#if EV_USE_SIGNALFD
1370static void
1371sigfdcb (EV_P_ ev_io *iow, int revents)
1372{
1373 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1374
1375 for (;;)
1376 {
1377 ssize_t res = read (sigfd, si, sizeof (si));
1378
1379 /* not ISO-C, as res might be -1, but works with SuS */
1380 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1381 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1382
1383 if (res < (ssize_t)sizeof (si))
1384 break;
1385 }
1386}
1387#endif
1388
1389#endif
1390
1121/*****************************************************************************/ 1391/*****************************************************************************/
1122 1392
1393#if EV_CHILD_ENABLE
1123static WL childs [EV_PID_HASHSIZE]; 1394static WL childs [EV_PID_HASHSIZE];
1124
1125#ifndef _WIN32
1126 1395
1127static ev_signal childev; 1396static ev_signal childev;
1128 1397
1129#ifndef WIFCONTINUED 1398#ifndef WIFCONTINUED
1130# define WIFCONTINUED(status) 0 1399# define WIFCONTINUED(status) 0
1131#endif 1400#endif
1132 1401
1133void inline_speed 1402/* handle a single child status event */
1403inline_speed void
1134child_reap (EV_P_ int chain, int pid, int status) 1404child_reap (EV_P_ int chain, int pid, int status)
1135{ 1405{
1136 ev_child *w; 1406 ev_child *w;
1137 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1407 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138 1408
1139 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1409 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1140 { 1410 {
1141 if ((w->pid == pid || !w->pid) 1411 if ((w->pid == pid || !w->pid)
1142 && (!traced || (w->flags & 1))) 1412 && (!traced || (w->flags & 1)))
1143 { 1413 {
1144 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1414 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1151 1421
1152#ifndef WCONTINUED 1422#ifndef WCONTINUED
1153# define WCONTINUED 0 1423# define WCONTINUED 0
1154#endif 1424#endif
1155 1425
1426/* called on sigchld etc., calls waitpid */
1156static void 1427static void
1157childcb (EV_P_ ev_signal *sw, int revents) 1428childcb (EV_P_ ev_signal *sw, int revents)
1158{ 1429{
1159 int pid, status; 1430 int pid, status;
1160 1431
… …
1168 /* make sure we are called again until all children have been reaped */ 1439 /* make sure we are called again until all children have been reaped */
1169 /* we need to do it this way so that the callback gets called before we continue */ 1440 /* we need to do it this way so that the callback gets called before we continue */
1170 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1441 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1171 1442
1172 child_reap (EV_A_ pid, pid, status); 1443 child_reap (EV_A_ pid, pid, status);
1173 if (EV_PID_HASHSIZE > 1) 1444 if ((EV_PID_HASHSIZE) > 1)
1174 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1445 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1175} 1446}
1176 1447
1177#endif 1448#endif
1178 1449
… …
1241 /* kqueue is borked on everything but netbsd apparently */ 1512 /* kqueue is borked on everything but netbsd apparently */
1242 /* it usually doesn't work correctly on anything but sockets and pipes */ 1513 /* it usually doesn't work correctly on anything but sockets and pipes */
1243 flags &= ~EVBACKEND_KQUEUE; 1514 flags &= ~EVBACKEND_KQUEUE;
1244#endif 1515#endif
1245#ifdef __APPLE__ 1516#ifdef __APPLE__
1246 // flags &= ~EVBACKEND_KQUEUE; for documentation 1517 /* only select works correctly on that "unix-certified" platform */
1247 flags &= ~EVBACKEND_POLL; 1518 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1519 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1520#endif
1521#ifdef __FreeBSD__
1522 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1248#endif 1523#endif
1249 1524
1250 return flags; 1525 return flags;
1251} 1526}
1252 1527
… …
1266ev_backend (EV_P) 1541ev_backend (EV_P)
1267{ 1542{
1268 return backend; 1543 return backend;
1269} 1544}
1270 1545
1546#if EV_FEATURE_API
1271unsigned int 1547unsigned int
1272ev_loop_count (EV_P) 1548ev_iteration (EV_P)
1273{ 1549{
1274 return loop_count; 1550 return loop_count;
1275} 1551}
1276 1552
1553unsigned int
1554ev_depth (EV_P)
1555{
1556 return loop_depth;
1557}
1558
1277void 1559void
1278ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279{ 1561{
1280 io_blocktime = interval; 1562 io_blocktime = interval;
1281} 1563}
… …
1284ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1567{
1286 timeout_blocktime = interval; 1568 timeout_blocktime = interval;
1287} 1569}
1288 1570
1571void
1572ev_set_userdata (EV_P_ void *data)
1573{
1574 userdata = data;
1575}
1576
1577void *
1578ev_userdata (EV_P)
1579{
1580 return userdata;
1581}
1582
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584{
1585 invoke_cb = invoke_pending_cb;
1586}
1587
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1589{
1590 release_cb = release;
1591 acquire_cb = acquire;
1592}
1593#endif
1594
1595/* initialise a loop structure, must be zero-initialised */
1289static void noinline 1596static void noinline
1290loop_init (EV_P_ unsigned int flags) 1597loop_init (EV_P_ unsigned int flags)
1291{ 1598{
1292 if (!backend) 1599 if (!backend)
1293 { 1600 {
1601#if EV_USE_REALTIME
1602 if (!have_realtime)
1603 {
1604 struct timespec ts;
1605
1606 if (!clock_gettime (CLOCK_REALTIME, &ts))
1607 have_realtime = 1;
1608 }
1609#endif
1610
1294#if EV_USE_MONOTONIC 1611#if EV_USE_MONOTONIC
1612 if (!have_monotonic)
1295 { 1613 {
1296 struct timespec ts; 1614 struct timespec ts;
1615
1297 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1616 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298 have_monotonic = 1; 1617 have_monotonic = 1;
1299 } 1618 }
1300#endif 1619#endif
1620
1621 /* pid check not overridable via env */
1622#ifndef _WIN32
1623 if (flags & EVFLAG_FORKCHECK)
1624 curpid = getpid ();
1625#endif
1626
1627 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS"));
1301 1631
1302 ev_rt_now = ev_time (); 1632 ev_rt_now = ev_time ();
1303 mn_now = get_clock (); 1633 mn_now = get_clock ();
1304 now_floor = mn_now; 1634 now_floor = mn_now;
1305 rtmn_diff = ev_rt_now - mn_now; 1635 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending;
1638#endif
1306 1639
1307 io_blocktime = 0.; 1640 io_blocktime = 0.;
1308 timeout_blocktime = 0.; 1641 timeout_blocktime = 0.;
1309 backend = 0; 1642 backend = 0;
1310 backend_fd = -1; 1643 backend_fd = -1;
1311 gotasync = 0; 1644 sig_pending = 0;
1645#if EV_ASYNC_ENABLE
1646 async_pending = 0;
1647#endif
1312#if EV_USE_INOTIFY 1648#if EV_USE_INOTIFY
1313 fs_fd = -2; 1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1314#endif 1650#endif
1315 1651#if EV_USE_SIGNALFD
1316 /* pid check not overridable via env */ 1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1317#ifndef _WIN32
1318 if (flags & EVFLAG_FORKCHECK)
1319 curpid = getpid ();
1320#endif 1653#endif
1321
1322 if (!(flags & EVFLAG_NOENV)
1323 && !enable_secure ()
1324 && getenv ("LIBEV_FLAGS"))
1325 flags = atoi (getenv ("LIBEV_FLAGS"));
1326 1654
1327 if (!(flags & 0x0000ffffU)) 1655 if (!(flags & 0x0000ffffU))
1328 flags |= ev_recommended_backends (); 1656 flags |= ev_recommended_backends ();
1329 1657
1330#if EV_USE_PORT 1658#if EV_USE_PORT
… …
1341#endif 1669#endif
1342#if EV_USE_SELECT 1670#if EV_USE_SELECT
1343 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344#endif 1672#endif
1345 1673
1674 ev_prepare_init (&pending_w, pendingcb);
1675
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1346 ev_init (&pipeev, pipecb); 1677 ev_init (&pipe_w, pipecb);
1347 ev_set_priority (&pipeev, EV_MAXPRI); 1678 ev_set_priority (&pipe_w, EV_MAXPRI);
1679#endif
1348 } 1680 }
1349} 1681}
1350 1682
1683/* free up a loop structure */
1351static void noinline 1684static void noinline
1352loop_destroy (EV_P) 1685loop_destroy (EV_P)
1353{ 1686{
1354 int i; 1687 int i;
1355 1688
1356 if (ev_is_active (&pipeev)) 1689 if (ev_is_active (&pipe_w))
1357 { 1690 {
1358 ev_ref (EV_A); /* signal watcher */ 1691 /*ev_ref (EV_A);*/
1359 ev_io_stop (EV_A_ &pipeev); 1692 /*ev_io_stop (EV_A_ &pipe_w);*/
1360 1693
1361#if EV_USE_EVENTFD 1694#if EV_USE_EVENTFD
1362 if (evfd >= 0) 1695 if (evfd >= 0)
1363 close (evfd); 1696 close (evfd);
1364#endif 1697#endif
1365 1698
1366 if (evpipe [0] >= 0) 1699 if (evpipe [0] >= 0)
1367 { 1700 {
1368 close (evpipe [0]); 1701 EV_WIN32_CLOSE_FD (evpipe [0]);
1369 close (evpipe [1]); 1702 EV_WIN32_CLOSE_FD (evpipe [1]);
1370 } 1703 }
1371 } 1704 }
1705
1706#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w))
1708 close (sigfd);
1709#endif
1372 1710
1373#if EV_USE_INOTIFY 1711#if EV_USE_INOTIFY
1374 if (fs_fd >= 0) 1712 if (fs_fd >= 0)
1375 close (fs_fd); 1713 close (fs_fd);
1376#endif 1714#endif
… …
1400#if EV_IDLE_ENABLE 1738#if EV_IDLE_ENABLE
1401 array_free (idle, [i]); 1739 array_free (idle, [i]);
1402#endif 1740#endif
1403 } 1741 }
1404 1742
1405 ev_free (anfds); anfdmax = 0; 1743 ev_free (anfds); anfds = 0; anfdmax = 0;
1406 1744
1407 /* have to use the microsoft-never-gets-it-right macro */ 1745 /* have to use the microsoft-never-gets-it-right macro */
1746 array_free (rfeed, EMPTY);
1408 array_free (fdchange, EMPTY); 1747 array_free (fdchange, EMPTY);
1409 array_free (timer, EMPTY); 1748 array_free (timer, EMPTY);
1410#if EV_PERIODIC_ENABLE 1749#if EV_PERIODIC_ENABLE
1411 array_free (periodic, EMPTY); 1750 array_free (periodic, EMPTY);
1412#endif 1751#endif
… …
1421 1760
1422 backend = 0; 1761 backend = 0;
1423} 1762}
1424 1763
1425#if EV_USE_INOTIFY 1764#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 1765inline_size void infy_fork (EV_P);
1427#endif 1766#endif
1428 1767
1429void inline_size 1768inline_size void
1430loop_fork (EV_P) 1769loop_fork (EV_P)
1431{ 1770{
1432#if EV_USE_PORT 1771#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 1773#endif
… …
1440#endif 1779#endif
1441#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 1781 infy_fork (EV_A);
1443#endif 1782#endif
1444 1783
1445 if (ev_is_active (&pipeev)) 1784 if (ev_is_active (&pipe_w))
1446 { 1785 {
1447 /* this "locks" the handlers against writing to the pipe */ 1786 /* this "locks" the handlers against writing to the pipe */
1448 /* while we modify the fd vars */ 1787 /* while we modify the fd vars */
1449 gotsig = 1; 1788 sig_pending = 1;
1450#if EV_ASYNC_ENABLE 1789#if EV_ASYNC_ENABLE
1451 gotasync = 1; 1790 async_pending = 1;
1452#endif 1791#endif
1453 1792
1454 ev_ref (EV_A); 1793 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 1794 ev_io_stop (EV_A_ &pipe_w);
1456 1795
1457#if EV_USE_EVENTFD 1796#if EV_USE_EVENTFD
1458 if (evfd >= 0) 1797 if (evfd >= 0)
1459 close (evfd); 1798 close (evfd);
1460#endif 1799#endif
1461 1800
1462 if (evpipe [0] >= 0) 1801 if (evpipe [0] >= 0)
1463 { 1802 {
1464 close (evpipe [0]); 1803 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 1805 }
1467 1806
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 1808 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 1809 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 1810 pipecb (EV_A_ &pipe_w, EV_READ);
1811#endif
1471 } 1812 }
1472 1813
1473 postfork = 0; 1814 postfork = 0;
1474} 1815}
1475 1816
1476#if EV_MULTIPLICITY 1817#if EV_MULTIPLICITY
1477 1818
1478struct ev_loop * 1819struct ev_loop *
1479ev_loop_new (unsigned int flags) 1820ev_loop_new (unsigned int flags)
1480{ 1821{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 1823
1483 memset (loop, 0, sizeof (struct ev_loop)); 1824 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 1825 loop_init (EV_A_ flags);
1486 1826
1487 if (ev_backend (EV_A)) 1827 if (ev_backend (EV_A))
1488 return loop; 1828 return EV_A;
1489 1829
1490 return 0; 1830 return 0;
1491} 1831}
1492 1832
1493void 1833void
… …
1500void 1840void
1501ev_loop_fork (EV_P) 1841ev_loop_fork (EV_P)
1502{ 1842{
1503 postfork = 1; /* must be in line with ev_default_fork */ 1843 postfork = 1; /* must be in line with ev_default_fork */
1504} 1844}
1845#endif /* multiplicity */
1505 1846
1506#if EV_VERIFY 1847#if EV_VERIFY
1507static void noinline 1848static void noinline
1508verify_watcher (EV_P_ W w) 1849verify_watcher (EV_P_ W w)
1509{ 1850{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 1852
1512 if (w->pending) 1853 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 1855}
1515 1856
1516static void noinline 1857static void noinline
1517verify_heap (EV_P_ ANHE *heap, int N) 1858verify_heap (EV_P_ ANHE *heap, int N)
1518{ 1859{
1519 int i; 1860 int i;
1520 1861
1521 for (i = HEAP0; i < N + HEAP0; ++i) 1862 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 1863 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1864 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1865 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1866 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 1867
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 1869 }
1529} 1870}
1530 1871
1531static void noinline 1872static void noinline
1532array_verify (EV_P_ W *ws, int cnt) 1873array_verify (EV_P_ W *ws, int cnt)
1533{ 1874{
1534 while (cnt--) 1875 while (cnt--)
1535 { 1876 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 1878 verify_watcher (EV_A_ ws [cnt]);
1538 } 1879 }
1539} 1880}
1540#endif 1881#endif
1541 1882
1883#if EV_FEATURE_API
1542void 1884void
1543ev_loop_verify (EV_P) 1885ev_verify (EV_P)
1544{ 1886{
1545#if EV_VERIFY 1887#if EV_VERIFY
1546 int i; 1888 int i;
1547 WL w; 1889 WL w;
1548 1890
1549 assert (activecnt >= -1); 1891 assert (activecnt >= -1);
1550 1892
1551 assert (fdchangemax >= fdchangecnt); 1893 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 1894 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 1896
1555 assert (anfdmax >= 0); 1897 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 1898 for (i = 0; i < anfdmax; ++i)
1557 for (w = anfds [i].head; w; w = w->next) 1899 for (w = anfds [i].head; w; w = w->next)
1558 { 1900 {
1559 verify_watcher (EV_A_ (W)w); 1901 verify_watcher (EV_A_ (W)w);
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 1904 }
1563 1905
1564 assert (timermax >= timercnt); 1906 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 1907 verify_heap (EV_A_ timers, timercnt);
1566 1908
… …
1587#if EV_ASYNC_ENABLE 1929#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 1930 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 1931 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 1932#endif
1591 1933
1934#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 1935 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 1936 array_verify (EV_A_ (W *)prepares, preparecnt);
1937#endif
1594 1938
1939#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 1940 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 1941 array_verify (EV_A_ (W *)checks, checkcnt);
1942#endif
1597 1943
1598# if 0 1944# if 0
1945#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1946 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1600 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1947 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1601# endif 1948#endif
1602#endif 1949# endif
1950#endif
1603} 1951}
1604 1952#endif
1605#endif /* multiplicity */
1606 1953
1607#if EV_MULTIPLICITY 1954#if EV_MULTIPLICITY
1608struct ev_loop * 1955struct ev_loop *
1609ev_default_loop_init (unsigned int flags) 1956ev_default_loop_init (unsigned int flags)
1610#else 1957#else
… …
1613#endif 1960#endif
1614{ 1961{
1615 if (!ev_default_loop_ptr) 1962 if (!ev_default_loop_ptr)
1616 { 1963 {
1617#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1965 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 1966#else
1620 ev_default_loop_ptr = 1; 1967 ev_default_loop_ptr = 1;
1621#endif 1968#endif
1622 1969
1623 loop_init (EV_A_ flags); 1970 loop_init (EV_A_ flags);
1624 1971
1625 if (ev_backend (EV_A)) 1972 if (ev_backend (EV_A))
1626 { 1973 {
1627#ifndef _WIN32 1974#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 1975 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 1976 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 1977 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1978 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 1979#endif
… …
1640 1987
1641void 1988void
1642ev_default_destroy (void) 1989ev_default_destroy (void)
1643{ 1990{
1644#if EV_MULTIPLICITY 1991#if EV_MULTIPLICITY
1645 struct ev_loop *loop = ev_default_loop_ptr; 1992 EV_P = ev_default_loop_ptr;
1646#endif 1993#endif
1647 1994
1648 ev_default_loop_ptr = 0; 1995 ev_default_loop_ptr = 0;
1649 1996
1650#ifndef _WIN32 1997#if EV_CHILD_ENABLE
1651 ev_ref (EV_A); /* child watcher */ 1998 ev_ref (EV_A); /* child watcher */
1652 ev_signal_stop (EV_A_ &childev); 1999 ev_signal_stop (EV_A_ &childev);
1653#endif 2000#endif
1654 2001
1655 loop_destroy (EV_A); 2002 loop_destroy (EV_A);
… …
1657 2004
1658void 2005void
1659ev_default_fork (void) 2006ev_default_fork (void)
1660{ 2007{
1661#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
1662 struct ev_loop *loop = ev_default_loop_ptr; 2009 EV_P = ev_default_loop_ptr;
1663#endif 2010#endif
1664 2011
1665 postfork = 1; /* must be in line with ev_loop_fork */ 2012 postfork = 1; /* must be in line with ev_loop_fork */
1666} 2013}
1667 2014
… …
1671ev_invoke (EV_P_ void *w, int revents) 2018ev_invoke (EV_P_ void *w, int revents)
1672{ 2019{
1673 EV_CB_INVOKE ((W)w, revents); 2020 EV_CB_INVOKE ((W)w, revents);
1674} 2021}
1675 2022
1676void inline_speed 2023unsigned int
1677call_pending (EV_P) 2024ev_pending_count (EV_P)
2025{
2026 int pri;
2027 unsigned int count = 0;
2028
2029 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri];
2031
2032 return count;
2033}
2034
2035void noinline
2036ev_invoke_pending (EV_P)
1678{ 2037{
1679 int pri; 2038 int pri;
1680 2039
1681 for (pri = NUMPRI; pri--; ) 2040 for (pri = NUMPRI; pri--; )
1682 while (pendingcnt [pri]) 2041 while (pendingcnt [pri])
1683 { 2042 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685 2044
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
1689 2047
1690 p->w->pending = 0; 2048 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2049 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2050 EV_FREQUENT_CHECK;
1693 }
1694 } 2051 }
1695} 2052}
1696 2053
1697#if EV_IDLE_ENABLE 2054#if EV_IDLE_ENABLE
1698void inline_size 2055/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */
2057inline_size void
1699idle_reify (EV_P) 2058idle_reify (EV_P)
1700{ 2059{
1701 if (expect_false (idleall)) 2060 if (expect_false (idleall))
1702 { 2061 {
1703 int pri; 2062 int pri;
… …
1715 } 2074 }
1716 } 2075 }
1717} 2076}
1718#endif 2077#endif
1719 2078
1720void inline_size 2079/* make timers pending */
2080inline_size void
1721timers_reify (EV_P) 2081timers_reify (EV_P)
1722{ 2082{
1723 EV_FREQUENT_CHECK; 2083 EV_FREQUENT_CHECK;
1724 2084
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2085 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2086 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2087 do
1728
1729 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731 /* first reschedule or stop timer */
1732 if (w->repeat)
1733 { 2088 {
2089 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2090
2091 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2092
2093 /* first reschedule or stop timer */
2094 if (w->repeat)
2095 {
1734 ev_at (w) += w->repeat; 2096 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2097 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2098 ev_at (w) = mn_now;
1737 2099
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2100 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2101
1740 ANHE_at_cache (timers [HEAP0]); 2102 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2103 downheap (timers, timercnt, HEAP0);
2104 }
2105 else
2106 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2107
2108 EV_FREQUENT_CHECK;
2109 feed_reverse (EV_A_ (W)w);
1742 } 2110 }
1743 else 2111 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2112
1746 EV_FREQUENT_CHECK; 2113 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2114 }
1749} 2115}
1750 2116
1751#if EV_PERIODIC_ENABLE 2117#if EV_PERIODIC_ENABLE
1752void inline_size 2118/* make periodics pending */
2119inline_size void
1753periodics_reify (EV_P) 2120periodics_reify (EV_P)
1754{ 2121{
1755 EV_FREQUENT_CHECK; 2122 EV_FREQUENT_CHECK;
1756 2123
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2125 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2126 int feed_count = 0;
1760 2127
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2128 do
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2129 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2133
2134 /* first reschedule or stop timer */
2135 if (w->reschedule_cb)
2136 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2137 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2138
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2139 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2140
1770 ANHE_at_cache (periodics [HEAP0]); 2141 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2142 downheap (periodics, periodiccnt, HEAP0);
2143 }
2144 else if (w->interval)
2145 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0);
2162 }
2163 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2165
2166 EV_FREQUENT_CHECK;
2167 feed_reverse (EV_A_ (W)w);
1772 } 2168 }
1773 else if (w->interval) 2169 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774 {
1775 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776 /* if next trigger time is not sufficiently in the future, put it there */
1777 /* this might happen because of floating point inexactness */
1778 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779 {
1780 ev_at (w) += w->interval;
1781 2170
1782 /* if interval is unreasonably low we might still have a time in the past */
1783 /* so correct this. this will make the periodic very inexact, but the user */
1784 /* has effectively asked to get triggered more often than possible */
1785 if (ev_at (w) < ev_rt_now)
1786 ev_at (w) = ev_rt_now;
1787 }
1788
1789 ANHE_at_cache (periodics [HEAP0]);
1790 downheap (periodics, periodiccnt, HEAP0);
1791 }
1792 else
1793 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795 EV_FREQUENT_CHECK;
1796 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2171 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2172 }
1798} 2173}
1799 2174
2175/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1800static void noinline 2177static void noinline
1801periodics_reschedule (EV_P) 2178periodics_reschedule (EV_P)
1802{ 2179{
1803 int i; 2180 int i;
1804 2181
… …
1817 2194
1818 reheap (periodics, periodiccnt); 2195 reheap (periodics, periodiccnt);
1819} 2196}
1820#endif 2197#endif
1821 2198
1822void inline_speed 2199/* adjust all timers by a given offset */
2200static void noinline
2201timers_reschedule (EV_P_ ev_tstamp adjust)
2202{
2203 int i;
2204
2205 for (i = 0; i < timercnt; ++i)
2206 {
2207 ANHE *he = timers + i + HEAP0;
2208 ANHE_w (*he)->at += adjust;
2209 ANHE_at_cache (*he);
2210 }
2211}
2212
2213/* fetch new monotonic and realtime times from the kernel */
2214/* also detect if there was a timejump, and act accordingly */
2215inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2216time_update (EV_P_ ev_tstamp max_block)
1824{ 2217{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2218#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2219 if (expect_true (have_monotonic))
1829 { 2220 {
2221 int i;
1830 ev_tstamp odiff = rtmn_diff; 2222 ev_tstamp odiff = rtmn_diff;
1831 2223
1832 mn_now = get_clock (); 2224 mn_now = get_clock ();
1833 2225
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2226 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1860 ev_rt_now = ev_time (); 2252 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2253 mn_now = get_clock ();
1862 now_floor = mn_now; 2254 now_floor = mn_now;
1863 } 2255 }
1864 2256
2257 /* no timer adjustment, as the monotonic clock doesn't jump */
2258 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2259# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2260 periodics_reschedule (EV_A);
1867# endif 2261# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2262 }
1871 else 2263 else
1872#endif 2264#endif
1873 { 2265 {
1874 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1875 2267
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2268 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 2269 {
2270 /* adjust timers. this is easy, as the offset is the same for all of them */
2271 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 2272#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2273 periodics_reschedule (EV_A);
1880#endif 2274#endif
1881 /* adjust timers. this is easy, as the offset is the same for all of them */
1882 for (i = 0; i < timercnt; ++i)
1883 {
1884 ANHE *he = timers + i + HEAP0;
1885 ANHE_w (*he)->at += ev_rt_now - mn_now;
1886 ANHE_at_cache (*he);
1887 }
1888 } 2275 }
1889 2276
1890 mn_now = ev_rt_now; 2277 mn_now = ev_rt_now;
1891 } 2278 }
1892} 2279}
1893 2280
1894void 2281void
1895ev_ref (EV_P)
1896{
1897 ++activecnt;
1898}
1899
1900void
1901ev_unref (EV_P)
1902{
1903 --activecnt;
1904}
1905
1906void
1907ev_now_update (EV_P)
1908{
1909 time_update (EV_A_ 1e100);
1910}
1911
1912static int loop_done;
1913
1914void
1915ev_loop (EV_P_ int flags) 2282ev_loop (EV_P_ int flags)
1916{ 2283{
2284#if EV_FEATURE_API
2285 ++loop_depth;
2286#endif
2287
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2289
1917 loop_done = EVUNLOOP_CANCEL; 2290 loop_done = EVUNLOOP_CANCEL;
1918 2291
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 2293
1921 do 2294 do
1922 { 2295 {
1923#if EV_VERIFY >= 2 2296#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 2297 ev_verify (EV_A);
1925#endif 2298#endif
1926 2299
1927#ifndef _WIN32 2300#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 2301 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 2302 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 2310 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 2311 if (expect_false (postfork))
1939 if (forkcnt) 2312 if (forkcnt)
1940 { 2313 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2314 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 2315 EV_INVOKE_PENDING;
1943 } 2316 }
1944#endif 2317#endif
1945 2318
2319#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 2320 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 2321 if (expect_false (preparecnt))
1948 { 2322 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2323 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 2324 EV_INVOKE_PENDING;
1951 } 2325 }
2326#endif
1952 2327
1953 if (expect_false (!activecnt)) 2328 if (expect_false (loop_done))
1954 break; 2329 break;
1955 2330
1956 /* we might have forked, so reify kernel state if necessary */ 2331 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 2332 if (expect_false (postfork))
1958 loop_fork (EV_A); 2333 loop_fork (EV_A);
… …
1965 ev_tstamp waittime = 0.; 2340 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 2341 ev_tstamp sleeptime = 0.;
1967 2342
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1969 { 2344 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
1970 /* update time to cancel out callback processing overhead */ 2348 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100); 2349 time_update (EV_A_ 1e100);
1972 2350
1973 waittime = MAX_BLOCKTIME; 2351 waittime = MAX_BLOCKTIME;
1974 2352
… …
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1985 if (waittime > to) waittime = to; 2363 if (waittime > to) waittime = to;
1986 } 2364 }
1987#endif 2365#endif
1988 2366
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 2368 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 2369 waittime = timeout_blocktime;
1991 2370
1992 sleeptime = waittime - backend_fudge; 2371 /* extra check because io_blocktime is commonly 0 */
1993
1994 if (expect_true (sleeptime > io_blocktime)) 2372 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 2373 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375
2376 if (sleeptime > waittime - backend_fudge)
2377 sleeptime = waittime - backend_fudge;
2378
2379 if (expect_true (sleeptime > 0.))
2380 {
1999 ev_sleep (sleeptime); 2381 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 2382 waittime -= sleeptime;
2383 }
2001 } 2384 }
2002 } 2385 }
2003 2386
2387#if EV_FEATURE_API
2004 ++loop_count; 2388 ++loop_count;
2389#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 2391 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2006 2393
2007 /* update ev_rt_now, do magic */ 2394 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 2395 time_update (EV_A_ waittime + sleeptime);
2009 } 2396 }
2010 2397
… …
2017#if EV_IDLE_ENABLE 2404#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 2405 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 2406 idle_reify (EV_A);
2020#endif 2407#endif
2021 2408
2409#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 2410 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 2411 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2412 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2413#endif
2025 2414
2026 call_pending (EV_A); 2415 EV_INVOKE_PENDING;
2027 } 2416 }
2028 while (expect_true ( 2417 while (expect_true (
2029 activecnt 2418 activecnt
2030 && !loop_done 2419 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2032 )); 2421 ));
2033 2422
2034 if (loop_done == EVUNLOOP_ONE) 2423 if (loop_done == EVUNLOOP_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 2424 loop_done = EVUNLOOP_CANCEL;
2425
2426#if EV_FEATURE_API
2427 --loop_depth;
2428#endif
2036} 2429}
2037 2430
2038void 2431void
2039ev_unloop (EV_P_ int how) 2432ev_unloop (EV_P_ int how)
2040{ 2433{
2041 loop_done = how; 2434 loop_done = how;
2042} 2435}
2043 2436
2437void
2438ev_ref (EV_P)
2439{
2440 ++activecnt;
2441}
2442
2443void
2444ev_unref (EV_P)
2445{
2446 --activecnt;
2447}
2448
2449void
2450ev_now_update (EV_P)
2451{
2452 time_update (EV_A_ 1e100);
2453}
2454
2455void
2456ev_suspend (EV_P)
2457{
2458 ev_now_update (EV_A);
2459}
2460
2461void
2462ev_resume (EV_P)
2463{
2464 ev_tstamp mn_prev = mn_now;
2465
2466 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev);
2468#if EV_PERIODIC_ENABLE
2469 /* TODO: really do this? */
2470 periodics_reschedule (EV_A);
2471#endif
2472}
2473
2044/*****************************************************************************/ 2474/*****************************************************************************/
2475/* singly-linked list management, used when the expected list length is short */
2045 2476
2046void inline_size 2477inline_size void
2047wlist_add (WL *head, WL elem) 2478wlist_add (WL *head, WL elem)
2048{ 2479{
2049 elem->next = *head; 2480 elem->next = *head;
2050 *head = elem; 2481 *head = elem;
2051} 2482}
2052 2483
2053void inline_size 2484inline_size void
2054wlist_del (WL *head, WL elem) 2485wlist_del (WL *head, WL elem)
2055{ 2486{
2056 while (*head) 2487 while (*head)
2057 { 2488 {
2058 if (*head == elem) 2489 if (expect_true (*head == elem))
2059 { 2490 {
2060 *head = elem->next; 2491 *head = elem->next;
2061 return; 2492 break;
2062 } 2493 }
2063 2494
2064 head = &(*head)->next; 2495 head = &(*head)->next;
2065 } 2496 }
2066} 2497}
2067 2498
2068void inline_speed 2499/* internal, faster, version of ev_clear_pending */
2500inline_speed void
2069clear_pending (EV_P_ W w) 2501clear_pending (EV_P_ W w)
2070{ 2502{
2071 if (w->pending) 2503 if (w->pending)
2072 { 2504 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2505 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 2506 w->pending = 0;
2075 } 2507 }
2076} 2508}
2077 2509
2078int 2510int
… …
2082 int pending = w_->pending; 2514 int pending = w_->pending;
2083 2515
2084 if (expect_true (pending)) 2516 if (expect_true (pending))
2085 { 2517 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2518 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2519 p->w = (W)&pending_w;
2087 w_->pending = 0; 2520 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 2521 return p->events;
2090 } 2522 }
2091 else 2523 else
2092 return 0; 2524 return 0;
2093} 2525}
2094 2526
2095void inline_size 2527inline_size void
2096pri_adjust (EV_P_ W w) 2528pri_adjust (EV_P_ W w)
2097{ 2529{
2098 int pri = w->priority; 2530 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2531 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2532 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 2533 ev_set_priority (w, pri);
2102} 2534}
2103 2535
2104void inline_speed 2536inline_speed void
2105ev_start (EV_P_ W w, int active) 2537ev_start (EV_P_ W w, int active)
2106{ 2538{
2107 pri_adjust (EV_A_ w); 2539 pri_adjust (EV_A_ w);
2108 w->active = active; 2540 w->active = active;
2109 ev_ref (EV_A); 2541 ev_ref (EV_A);
2110} 2542}
2111 2543
2112void inline_size 2544inline_size void
2113ev_stop (EV_P_ W w) 2545ev_stop (EV_P_ W w)
2114{ 2546{
2115 ev_unref (EV_A); 2547 ev_unref (EV_A);
2116 w->active = 0; 2548 w->active = 0;
2117} 2549}
… …
2124 int fd = w->fd; 2556 int fd = w->fd;
2125 2557
2126 if (expect_false (ev_is_active (w))) 2558 if (expect_false (ev_is_active (w)))
2127 return; 2559 return;
2128 2560
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 2561 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 2563
2132 EV_FREQUENT_CHECK; 2564 EV_FREQUENT_CHECK;
2133 2565
2134 ev_start (EV_A_ (W)w, 1); 2566 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 2568 wlist_add (&anfds[fd].head, (WL)w);
2137 2569
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 2571 w->events &= ~EV__IOFDSET;
2140 2572
2141 EV_FREQUENT_CHECK; 2573 EV_FREQUENT_CHECK;
2142} 2574}
2143 2575
2144void noinline 2576void noinline
… …
2146{ 2578{
2147 clear_pending (EV_A_ (W)w); 2579 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 2580 if (expect_false (!ev_is_active (w)))
2149 return; 2581 return;
2150 2582
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2583 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 2584
2153 EV_FREQUENT_CHECK; 2585 EV_FREQUENT_CHECK;
2154 2586
2155 wlist_del (&anfds[w->fd].head, (WL)w); 2587 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 2588 ev_stop (EV_A_ (W)w);
… …
2166 if (expect_false (ev_is_active (w))) 2598 if (expect_false (ev_is_active (w)))
2167 return; 2599 return;
2168 2600
2169 ev_at (w) += mn_now; 2601 ev_at (w) += mn_now;
2170 2602
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2603 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 2604
2173 EV_FREQUENT_CHECK; 2605 EV_FREQUENT_CHECK;
2174 2606
2175 ++timercnt; 2607 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 2611 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 2612 upheap (timers, ev_active (w));
2181 2613
2182 EV_FREQUENT_CHECK; 2614 EV_FREQUENT_CHECK;
2183 2615
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 2617}
2186 2618
2187void noinline 2619void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 2620ev_timer_stop (EV_P_ ev_timer *w)
2189{ 2621{
… …
2194 EV_FREQUENT_CHECK; 2626 EV_FREQUENT_CHECK;
2195 2627
2196 { 2628 {
2197 int active = ev_active (w); 2629 int active = ev_active (w);
2198 2630
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2631 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 2632
2201 --timercnt; 2633 --timercnt;
2202 2634
2203 if (expect_true (active < timercnt + HEAP0)) 2635 if (expect_true (active < timercnt + HEAP0))
2204 { 2636 {
2205 timers [active] = timers [timercnt + HEAP0]; 2637 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 2638 adjustheap (timers, timercnt, active);
2207 } 2639 }
2208 } 2640 }
2209 2641
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 2642 ev_at (w) -= mn_now;
2213 2643
2214 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
2645
2646 EV_FREQUENT_CHECK;
2215} 2647}
2216 2648
2217void noinline 2649void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 2650ev_timer_again (EV_P_ ev_timer *w)
2219{ 2651{
… …
2237 } 2669 }
2238 2670
2239 EV_FREQUENT_CHECK; 2671 EV_FREQUENT_CHECK;
2240} 2672}
2241 2673
2674ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w)
2676{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2678}
2679
2242#if EV_PERIODIC_ENABLE 2680#if EV_PERIODIC_ENABLE
2243void noinline 2681void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 2682ev_periodic_start (EV_P_ ev_periodic *w)
2245{ 2683{
2246 if (expect_false (ev_is_active (w))) 2684 if (expect_false (ev_is_active (w)))
… …
2248 2686
2249 if (w->reschedule_cb) 2687 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 2689 else if (w->interval)
2252 { 2690 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254 /* this formula differs from the one in periodic_reify because we do not always round up */ 2692 /* this formula differs from the one in periodic_reify because we do not always round up */
2255 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 2694 }
2257 else 2695 else
2258 ev_at (w) = w->offset; 2696 ev_at (w) = w->offset;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 2704 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 2705 upheap (periodics, ev_active (w));
2268 2706
2269 EV_FREQUENT_CHECK; 2707 EV_FREQUENT_CHECK;
2270 2708
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 2710}
2273 2711
2274void noinline 2712void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 2713ev_periodic_stop (EV_P_ ev_periodic *w)
2276{ 2714{
… …
2281 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2282 2720
2283 { 2721 {
2284 int active = ev_active (w); 2722 int active = ev_active (w);
2285 2723
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2724 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 2725
2288 --periodiccnt; 2726 --periodiccnt;
2289 2727
2290 if (expect_true (active < periodiccnt + HEAP0)) 2728 if (expect_true (active < periodiccnt + HEAP0))
2291 { 2729 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 2730 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 2731 adjustheap (periodics, periodiccnt, active);
2294 } 2732 }
2295 } 2733 }
2296 2734
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 2735 ev_stop (EV_A_ (W)w);
2736
2737 EV_FREQUENT_CHECK;
2300} 2738}
2301 2739
2302void noinline 2740void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 2741ev_periodic_again (EV_P_ ev_periodic *w)
2304{ 2742{
… …
2310 2748
2311#ifndef SA_RESTART 2749#ifndef SA_RESTART
2312# define SA_RESTART 0 2750# define SA_RESTART 0
2313#endif 2751#endif
2314 2752
2753#if EV_SIGNAL_ENABLE
2754
2315void noinline 2755void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 2756ev_signal_start (EV_P_ ev_signal *w)
2317{ 2757{
2318#if EV_MULTIPLICITY
2319 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320#endif
2321 if (expect_false (ev_is_active (w))) 2758 if (expect_false (ev_is_active (w)))
2322 return; 2759 return;
2323 2760
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 2762
2326 evpipe_init (EV_A); 2763#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 2766
2328 EV_FREQUENT_CHECK; 2767 signals [w->signum - 1].loop = EV_A;
2768#endif
2329 2769
2770 EV_FREQUENT_CHECK;
2771
2772#if EV_USE_SIGNALFD
2773 if (sigfd == -2)
2330 { 2774 {
2331#ifndef _WIN32 2775 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 2776 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 2777 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 2778
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2779 if (sigfd >= 0)
2780 {
2781 fd_intern (sigfd); /* doing it twice will not hurt */
2338 2782
2339#ifndef _WIN32 2783 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 2784
2341#endif 2785 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2786 ev_set_priority (&sigfd_w, EV_MAXPRI);
2787 ev_io_start (EV_A_ &sigfd_w);
2788 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2789 }
2342 } 2790 }
2791
2792 if (sigfd >= 0)
2793 {
2794 /* TODO: check .head */
2795 sigaddset (&sigfd_set, w->signum);
2796 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2797
2798 signalfd (sigfd, &sigfd_set, 0);
2799 }
2800#endif
2343 2801
2344 ev_start (EV_A_ (W)w, 1); 2802 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 2803 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 2804
2347 if (!((WL)w)->next) 2805 if (!((WL)w)->next)
2806# if EV_USE_SIGNALFD
2807 if (sigfd < 0) /*TODO*/
2808# endif
2348 { 2809 {
2349#if _WIN32 2810# ifdef _WIN32
2811 evpipe_init (EV_A);
2812
2350 signal (w->signum, ev_sighandler); 2813 signal (w->signum, ev_sighandler);
2351#else 2814# else
2352 struct sigaction sa; 2815 struct sigaction sa;
2816
2817 evpipe_init (EV_A);
2818
2353 sa.sa_handler = ev_sighandler; 2819 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 2820 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 2822 sigaction (w->signum, &sa, 0);
2823
2824 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2357#endif 2827#endif
2358 } 2828 }
2359 2829
2360 EV_FREQUENT_CHECK; 2830 EV_FREQUENT_CHECK;
2361} 2831}
2362 2832
2363void noinline 2833void noinline
… …
2371 2841
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 2842 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 2843 ev_stop (EV_A_ (W)w);
2374 2844
2375 if (!signals [w->signum - 1].head) 2845 if (!signals [w->signum - 1].head)
2846 {
2847#if EV_MULTIPLICITY
2848 signals [w->signum - 1].loop = 0; /* unattach from signal */
2849#endif
2850#if EV_USE_SIGNALFD
2851 if (sigfd >= 0)
2852 {
2853 sigset_t ss;
2854
2855 sigemptyset (&ss);
2856 sigaddset (&ss, w->signum);
2857 sigdelset (&sigfd_set, w->signum);
2858
2859 signalfd (sigfd, &sigfd_set, 0);
2860 sigprocmask (SIG_UNBLOCK, &ss, 0);
2861 }
2862 else
2863#endif
2376 signal (w->signum, SIG_DFL); 2864 signal (w->signum, SIG_DFL);
2865 }
2377 2866
2378 EV_FREQUENT_CHECK; 2867 EV_FREQUENT_CHECK;
2379} 2868}
2869
2870#endif
2871
2872#if EV_CHILD_ENABLE
2380 2873
2381void 2874void
2382ev_child_start (EV_P_ ev_child *w) 2875ev_child_start (EV_P_ ev_child *w)
2383{ 2876{
2384#if EV_MULTIPLICITY 2877#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 2879#endif
2387 if (expect_false (ev_is_active (w))) 2880 if (expect_false (ev_is_active (w)))
2388 return; 2881 return;
2389 2882
2390 EV_FREQUENT_CHECK; 2883 EV_FREQUENT_CHECK;
2391 2884
2392 ev_start (EV_A_ (W)w, 1); 2885 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2886 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 2887
2395 EV_FREQUENT_CHECK; 2888 EV_FREQUENT_CHECK;
2396} 2889}
2397 2890
2398void 2891void
… …
2402 if (expect_false (!ev_is_active (w))) 2895 if (expect_false (!ev_is_active (w)))
2403 return; 2896 return;
2404 2897
2405 EV_FREQUENT_CHECK; 2898 EV_FREQUENT_CHECK;
2406 2899
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 2901 ev_stop (EV_A_ (W)w);
2409 2902
2410 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2411} 2904}
2905
2906#endif
2412 2907
2413#if EV_STAT_ENABLE 2908#if EV_STAT_ENABLE
2414 2909
2415# ifdef _WIN32 2910# ifdef _WIN32
2416# undef lstat 2911# undef lstat
2417# define lstat(a,b) _stati64 (a,b) 2912# define lstat(a,b) _stati64 (a,b)
2418# endif 2913# endif
2419 2914
2420#define DEF_STAT_INTERVAL 5.0074891 2915#define DEF_STAT_INTERVAL 5.0074891
2916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2421#define MIN_STAT_INTERVAL 0.1074891 2917#define MIN_STAT_INTERVAL 0.1074891
2422 2918
2423static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2424 2920
2425#if EV_USE_INOTIFY 2921#if EV_USE_INOTIFY
2426# define EV_INOTIFY_BUFSIZE 8192 2922
2923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2427 2925
2428static void noinline 2926static void noinline
2429infy_add (EV_P_ ev_stat *w) 2927infy_add (EV_P_ ev_stat *w)
2430{ 2928{
2431 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2929 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2432 2930
2433 if (w->wd < 0) 2931 if (w->wd >= 0)
2932 {
2933 struct statfs sfs;
2934
2935 /* now local changes will be tracked by inotify, but remote changes won't */
2936 /* unless the filesystem is known to be local, we therefore still poll */
2937 /* also do poll on <2.6.25, but with normal frequency */
2938
2939 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */
2944 || sfs.f_type == 0x3153464a /* jfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */
2947 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2434 { 2951 }
2435 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2952 else
2953 {
2954 /* can't use inotify, continue to stat */
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2436 2956
2437 /* monitor some parent directory for speedup hints */ 2957 /* if path is not there, monitor some parent directory for speedup hints */
2438 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2958 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2439 /* but an efficiency issue only */ 2959 /* but an efficiency issue only */
2440 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2960 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2441 { 2961 {
2442 char path [4096]; 2962 char path [4096];
… …
2447 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2967 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2448 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2968 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2449 2969
2450 char *pend = strrchr (path, '/'); 2970 char *pend = strrchr (path, '/');
2451 2971
2452 if (!pend) 2972 if (!pend || pend == path)
2453 break; /* whoops, no '/', complain to your admin */ 2973 break;
2454 2974
2455 *pend = 0; 2975 *pend = 0;
2456 w->wd = inotify_add_watch (fs_fd, path, mask); 2976 w->wd = inotify_add_watch (fs_fd, path, mask);
2457 } 2977 }
2458 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2459 } 2979 }
2460 } 2980 }
2461 else
2462 todo, on nfs etc., we need to poll every 60s or so
2463 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464 2981
2465 if (w->wd >= 0) 2982 if (w->wd >= 0)
2466 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2983 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2984
2985 /* now re-arm timer, if required */
2986 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2987 ev_timer_again (EV_A_ &w->timer);
2988 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2467} 2989}
2468 2990
2469static void noinline 2991static void noinline
2470infy_del (EV_P_ ev_stat *w) 2992infy_del (EV_P_ ev_stat *w)
2471{ 2993{
… …
2474 2996
2475 if (wd < 0) 2997 if (wd < 0)
2476 return; 2998 return;
2477 2999
2478 w->wd = -2; 3000 w->wd = -2;
2479 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3001 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2480 wlist_del (&fs_hash [slot].head, (WL)w); 3002 wlist_del (&fs_hash [slot].head, (WL)w);
2481 3003
2482 /* remove this watcher, if others are watching it, they will rearm */ 3004 /* remove this watcher, if others are watching it, they will rearm */
2483 inotify_rm_watch (fs_fd, wd); 3005 inotify_rm_watch (fs_fd, wd);
2484} 3006}
… …
2486static void noinline 3008static void noinline
2487infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488{ 3010{
2489 if (slot < 0) 3011 if (slot < 0)
2490 /* overflow, need to check for all hash slots */ 3012 /* overflow, need to check for all hash slots */
2491 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2492 infy_wd (EV_A_ slot, wd, ev); 3014 infy_wd (EV_A_ slot, wd, ev);
2493 else 3015 else
2494 { 3016 {
2495 WL w_; 3017 WL w_;
2496 3018
2497 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3019 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2498 { 3020 {
2499 ev_stat *w = (ev_stat *)w_; 3021 ev_stat *w = (ev_stat *)w_;
2500 w_ = w_->next; /* lets us remove this watcher and all before it */ 3022 w_ = w_->next; /* lets us remove this watcher and all before it */
2501 3023
2502 if (w->wd == wd || wd == -1) 3024 if (w->wd == wd || wd == -1)
2503 { 3025 {
2504 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3026 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505 { 3027 {
3028 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2506 w->wd = -1; 3029 w->wd = -1;
2507 infy_add (EV_A_ w); /* re-add, no matter what */ 3030 infy_add (EV_A_ w); /* re-add, no matter what */
2508 } 3031 }
2509 3032
2510 stat_timer_cb (EV_A_ &w->timer, 0); 3033 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2515 3038
2516static void 3039static void
2517infy_cb (EV_P_ ev_io *w, int revents) 3040infy_cb (EV_P_ ev_io *w, int revents)
2518{ 3041{
2519 char buf [EV_INOTIFY_BUFSIZE]; 3042 char buf [EV_INOTIFY_BUFSIZE];
2520 struct inotify_event *ev = (struct inotify_event *)buf;
2521 int ofs; 3043 int ofs;
2522 int len = read (fs_fd, buf, sizeof (buf)); 3044 int len = read (fs_fd, buf, sizeof (buf));
2523 3045
2524 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3046 for (ofs = 0; ofs < len; )
3047 {
3048 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2525 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3049 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len;
3051 }
2526} 3052}
2527 3053
2528void inline_size 3054inline_size unsigned int
2529infy_init (EV_P) 3055ev_linux_version (void)
2530{ 3056{
2531 if (fs_fd != -2) 3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
2532 return; 3063 return 0;
2533 3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void
3087ev_check_2625 (EV_P)
3088{
2534 /* kernels < 2.6.25 are borked 3089 /* kernels < 2.6.25 are borked
2535 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2536 */ 3091 */
2537 { 3092 if (ev_linux_version () < 0x020619)
2538 struct utsname buf; 3093 return;
2539 int major, minor, micro;
2540 3094
3095 fs_2625 = 1;
3096}
3097
3098inline_size int
3099infy_newfd (void)
3100{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0)
3104 return fd;
3105#endif
3106 return inotify_init ();
3107}
3108
3109inline_size void
3110infy_init (EV_P)
3111{
3112 if (fs_fd != -2)
3113 return;
3114
2541 fs_fd = -1; 3115 fs_fd = -1;
2542 3116
2543 if (uname (&buf)) 3117 ev_check_2625 (EV_A);
2544 return;
2545 3118
2546 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2547 return;
2548
2549 if (major < 2
2550 || (major == 2 && minor < 6)
2551 || (major == 2 && minor == 6 && micro < 25))
2552 return;
2553 }
2554
2555 fs_fd = inotify_init (); 3119 fs_fd = infy_newfd ();
2556 3120
2557 if (fs_fd >= 0) 3121 if (fs_fd >= 0)
2558 { 3122 {
3123 fd_intern (fs_fd);
2559 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3124 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2560 ev_set_priority (&fs_w, EV_MAXPRI); 3125 ev_set_priority (&fs_w, EV_MAXPRI);
2561 ev_io_start (EV_A_ &fs_w); 3126 ev_io_start (EV_A_ &fs_w);
3127 ev_unref (EV_A);
2562 } 3128 }
2563} 3129}
2564 3130
2565void inline_size 3131inline_size void
2566infy_fork (EV_P) 3132infy_fork (EV_P)
2567{ 3133{
2568 int slot; 3134 int slot;
2569 3135
2570 if (fs_fd < 0) 3136 if (fs_fd < 0)
2571 return; 3137 return;
2572 3138
3139 ev_ref (EV_A);
3140 ev_io_stop (EV_A_ &fs_w);
2573 close (fs_fd); 3141 close (fs_fd);
2574 fs_fd = inotify_init (); 3142 fs_fd = infy_newfd ();
2575 3143
3144 if (fs_fd >= 0)
3145 {
3146 fd_intern (fs_fd);
3147 ev_io_set (&fs_w, fs_fd, EV_READ);
3148 ev_io_start (EV_A_ &fs_w);
3149 ev_unref (EV_A);
3150 }
3151
2576 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3152 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2577 { 3153 {
2578 WL w_ = fs_hash [slot].head; 3154 WL w_ = fs_hash [slot].head;
2579 fs_hash [slot].head = 0; 3155 fs_hash [slot].head = 0;
2580 3156
2581 while (w_) 3157 while (w_)
… …
2586 w->wd = -1; 3162 w->wd = -1;
2587 3163
2588 if (fs_fd >= 0) 3164 if (fs_fd >= 0)
2589 infy_add (EV_A_ w); /* re-add, no matter what */ 3165 infy_add (EV_A_ w); /* re-add, no matter what */
2590 else 3166 else
3167 {
3168 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3169 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2591 ev_timer_start (EV_A_ &w->timer); 3170 ev_timer_again (EV_A_ &w->timer);
3171 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3172 }
2592 } 3173 }
2593 } 3174 }
2594} 3175}
2595 3176
2596#endif 3177#endif
… …
2613static void noinline 3194static void noinline
2614stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3195stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2615{ 3196{
2616 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2617 3198
2618 /* we copy this here each the time so that */ 3199 ev_statdata prev = w->attr;
2619 /* prev has the old value when the callback gets invoked */
2620 w->prev = w->attr;
2621 ev_stat_stat (EV_A_ w); 3200 ev_stat_stat (EV_A_ w);
2622 3201
2623 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3202 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2624 if ( 3203 if (
2625 w->prev.st_dev != w->attr.st_dev 3204 prev.st_dev != w->attr.st_dev
2626 || w->prev.st_ino != w->attr.st_ino 3205 || prev.st_ino != w->attr.st_ino
2627 || w->prev.st_mode != w->attr.st_mode 3206 || prev.st_mode != w->attr.st_mode
2628 || w->prev.st_nlink != w->attr.st_nlink 3207 || prev.st_nlink != w->attr.st_nlink
2629 || w->prev.st_uid != w->attr.st_uid 3208 || prev.st_uid != w->attr.st_uid
2630 || w->prev.st_gid != w->attr.st_gid 3209 || prev.st_gid != w->attr.st_gid
2631 || w->prev.st_rdev != w->attr.st_rdev 3210 || prev.st_rdev != w->attr.st_rdev
2632 || w->prev.st_size != w->attr.st_size 3211 || prev.st_size != w->attr.st_size
2633 || w->prev.st_atime != w->attr.st_atime 3212 || prev.st_atime != w->attr.st_atime
2634 || w->prev.st_mtime != w->attr.st_mtime 3213 || prev.st_mtime != w->attr.st_mtime
2635 || w->prev.st_ctime != w->attr.st_ctime 3214 || prev.st_ctime != w->attr.st_ctime
2636 ) { 3215 ) {
3216 /* we only update w->prev on actual differences */
3217 /* in case we test more often than invoke the callback, */
3218 /* to ensure that prev is always different to attr */
3219 w->prev = prev;
3220
2637 #if EV_USE_INOTIFY 3221 #if EV_USE_INOTIFY
2638 if (fs_fd >= 0) 3222 if (fs_fd >= 0)
2639 { 3223 {
2640 infy_del (EV_A_ w); 3224 infy_del (EV_A_ w);
2641 infy_add (EV_A_ w); 3225 infy_add (EV_A_ w);
… …
2651ev_stat_start (EV_P_ ev_stat *w) 3235ev_stat_start (EV_P_ ev_stat *w)
2652{ 3236{
2653 if (expect_false (ev_is_active (w))) 3237 if (expect_false (ev_is_active (w)))
2654 return; 3238 return;
2655 3239
2656 /* since we use memcmp, we need to clear any padding data etc. */
2657 memset (&w->prev, 0, sizeof (ev_statdata));
2658 memset (&w->attr, 0, sizeof (ev_statdata));
2659
2660 ev_stat_stat (EV_A_ w); 3240 ev_stat_stat (EV_A_ w);
2661 3241
3242 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2662 if (w->interval < MIN_STAT_INTERVAL) 3243 w->interval = MIN_STAT_INTERVAL;
2663 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2664 3244
2665 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3245 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2666 ev_set_priority (&w->timer, ev_priority (w)); 3246 ev_set_priority (&w->timer, ev_priority (w));
2667 3247
2668#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
2669 infy_init (EV_A); 3249 infy_init (EV_A);
2670 3250
2671 if (fs_fd >= 0) 3251 if (fs_fd >= 0)
2672 infy_add (EV_A_ w); 3252 infy_add (EV_A_ w);
2673 else 3253 else
2674#endif 3254#endif
3255 {
2675 ev_timer_start (EV_A_ &w->timer); 3256 ev_timer_again (EV_A_ &w->timer);
3257 ev_unref (EV_A);
3258 }
2676 3259
2677 ev_start (EV_A_ (W)w, 1); 3260 ev_start (EV_A_ (W)w, 1);
2678 3261
2679 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2680} 3263}
… …
2689 EV_FREQUENT_CHECK; 3272 EV_FREQUENT_CHECK;
2690 3273
2691#if EV_USE_INOTIFY 3274#if EV_USE_INOTIFY
2692 infy_del (EV_A_ w); 3275 infy_del (EV_A_ w);
2693#endif 3276#endif
3277
3278 if (ev_is_active (&w->timer))
3279 {
3280 ev_ref (EV_A);
2694 ev_timer_stop (EV_A_ &w->timer); 3281 ev_timer_stop (EV_A_ &w->timer);
3282 }
2695 3283
2696 ev_stop (EV_A_ (W)w); 3284 ev_stop (EV_A_ (W)w);
2697 3285
2698 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2699} 3287}
… …
2744 3332
2745 EV_FREQUENT_CHECK; 3333 EV_FREQUENT_CHECK;
2746} 3334}
2747#endif 3335#endif
2748 3336
3337#if EV_PREPARE_ENABLE
2749void 3338void
2750ev_prepare_start (EV_P_ ev_prepare *w) 3339ev_prepare_start (EV_P_ ev_prepare *w)
2751{ 3340{
2752 if (expect_false (ev_is_active (w))) 3341 if (expect_false (ev_is_active (w)))
2753 return; 3342 return;
… …
2779 3368
2780 ev_stop (EV_A_ (W)w); 3369 ev_stop (EV_A_ (W)w);
2781 3370
2782 EV_FREQUENT_CHECK; 3371 EV_FREQUENT_CHECK;
2783} 3372}
3373#endif
2784 3374
3375#if EV_CHECK_ENABLE
2785void 3376void
2786ev_check_start (EV_P_ ev_check *w) 3377ev_check_start (EV_P_ ev_check *w)
2787{ 3378{
2788 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2789 return; 3380 return;
… …
2815 3406
2816 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
2817 3408
2818 EV_FREQUENT_CHECK; 3409 EV_FREQUENT_CHECK;
2819} 3410}
3411#endif
2820 3412
2821#if EV_EMBED_ENABLE 3413#if EV_EMBED_ENABLE
2822void noinline 3414void noinline
2823ev_embed_sweep (EV_P_ ev_embed *w) 3415ev_embed_sweep (EV_P_ ev_embed *w)
2824{ 3416{
… …
2840embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2841{ 3433{
2842 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3434 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2843 3435
2844 { 3436 {
2845 struct ev_loop *loop = w->other; 3437 EV_P = w->other;
2846 3438
2847 while (fdchangecnt) 3439 while (fdchangecnt)
2848 { 3440 {
2849 fd_reify (EV_A); 3441 fd_reify (EV_A);
2850 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3442 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2855static void 3447static void
2856embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3448embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2857{ 3449{
2858 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3450 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2859 3451
3452 ev_embed_stop (EV_A_ w);
3453
2860 { 3454 {
2861 struct ev_loop *loop = w->other; 3455 EV_P = w->other;
2862 3456
2863 ev_loop_fork (EV_A); 3457 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2864 } 3459 }
3460
3461 ev_embed_start (EV_A_ w);
2865} 3462}
2866 3463
2867#if 0 3464#if 0
2868static void 3465static void
2869embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3466embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2877{ 3474{
2878 if (expect_false (ev_is_active (w))) 3475 if (expect_false (ev_is_active (w)))
2879 return; 3476 return;
2880 3477
2881 { 3478 {
2882 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2883 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3480 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2884 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3481 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2885 } 3482 }
2886 3483
2887 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2888 3485
… …
2914 3511
2915 ev_io_stop (EV_A_ &w->io); 3512 ev_io_stop (EV_A_ &w->io);
2916 ev_prepare_stop (EV_A_ &w->prepare); 3513 ev_prepare_stop (EV_A_ &w->prepare);
2917 ev_fork_stop (EV_A_ &w->fork); 3514 ev_fork_stop (EV_A_ &w->fork);
2918 3515
3516 ev_stop (EV_A_ (W)w);
3517
2919 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2920} 3519}
2921#endif 3520#endif
2922 3521
2923#if EV_FORK_ENABLE 3522#if EV_FORK_ENABLE
… …
2999 3598
3000void 3599void
3001ev_async_send (EV_P_ ev_async *w) 3600ev_async_send (EV_P_ ev_async *w)
3002{ 3601{
3003 w->sent = 1; 3602 w->sent = 1;
3004 evpipe_write (EV_A_ &gotasync); 3603 evpipe_write (EV_A_ &async_pending);
3005} 3604}
3006#endif 3605#endif
3007 3606
3008/*****************************************************************************/ 3607/*****************************************************************************/
3009 3608
… …
3049{ 3648{
3050 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3051 3650
3052 if (expect_false (!once)) 3651 if (expect_false (!once))
3053 { 3652 {
3054 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3055 return; 3654 return;
3056 } 3655 }
3057 3656
3058 once->cb = cb; 3657 once->cb = cb;
3059 once->arg = arg; 3658 once->arg = arg;
… …
3071 ev_timer_set (&once->to, timeout, 0.); 3670 ev_timer_set (&once->to, timeout, 0.);
3072 ev_timer_start (EV_A_ &once->to); 3671 ev_timer_start (EV_A_ &once->to);
3073 } 3672 }
3074} 3673}
3075 3674
3675/*****************************************************************************/
3676
3677#if EV_WALK_ENABLE
3678void
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3680{
3681 int i, j;
3682 ev_watcher_list *wl, *wn;
3683
3684 if (types & (EV_IO | EV_EMBED))
3685 for (i = 0; i < anfdmax; ++i)
3686 for (wl = anfds [i].head; wl; )
3687 {
3688 wn = wl->next;
3689
3690#if EV_EMBED_ENABLE
3691 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3692 {
3693 if (types & EV_EMBED)
3694 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3695 }
3696 else
3697#endif
3698#if EV_USE_INOTIFY
3699 if (ev_cb ((ev_io *)wl) == infy_cb)
3700 ;
3701 else
3702#endif
3703 if ((ev_io *)wl != &pipe_w)
3704 if (types & EV_IO)
3705 cb (EV_A_ EV_IO, wl);
3706
3707 wl = wn;
3708 }
3709
3710 if (types & (EV_TIMER | EV_STAT))
3711 for (i = timercnt + HEAP0; i-- > HEAP0; )
3712#if EV_STAT_ENABLE
3713 /*TODO: timer is not always active*/
3714 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3715 {
3716 if (types & EV_STAT)
3717 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3718 }
3719 else
3720#endif
3721 if (types & EV_TIMER)
3722 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3723
3724#if EV_PERIODIC_ENABLE
3725 if (types & EV_PERIODIC)
3726 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif
3729
3730#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; )
3733 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif
3736
3737#if EV_FORK_ENABLE
3738 if (types & EV_FORK)
3739 for (i = forkcnt; i--; )
3740 if (ev_cb (forks [i]) != embed_fork_cb)
3741 cb (EV_A_ EV_FORK, forks [i]);
3742#endif
3743
3744#if EV_ASYNC_ENABLE
3745 if (types & EV_ASYNC)
3746 for (i = asynccnt; i--; )
3747 cb (EV_A_ EV_ASYNC, asyncs [i]);
3748#endif
3749
3750#if EV_PREPARE_ENABLE
3751 if (types & EV_PREPARE)
3752 for (i = preparecnt; i--; )
3753# if EV_EMBED_ENABLE
3754 if (ev_cb (prepares [i]) != embed_prepare_cb)
3755# endif
3756 cb (EV_A_ EV_PREPARE, prepares [i]);
3757#endif
3758
3759#if EV_CHECK_ENABLE
3760 if (types & EV_CHECK)
3761 for (i = checkcnt; i--; )
3762 cb (EV_A_ EV_CHECK, checks [i]);
3763#endif
3764
3765#if EV_SIGNAL_ENABLE
3766 if (types & EV_SIGNAL)
3767 for (i = 0; i < EV_NSIG - 1; ++i)
3768 for (wl = signals [i].head; wl; )
3769 {
3770 wn = wl->next;
3771 cb (EV_A_ EV_SIGNAL, wl);
3772 wl = wn;
3773 }
3774#endif
3775
3776#if EV_CHILD_ENABLE
3777 if (types & EV_CHILD)
3778 for (i = (EV_PID_HASHSIZE); i--; )
3779 for (wl = childs [i]; wl; )
3780 {
3781 wn = wl->next;
3782 cb (EV_A_ EV_CHILD, wl);
3783 wl = wn;
3784 }
3785#endif
3786/* EV_STAT 0x00001000 /* stat data changed */
3787/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3788}
3789#endif
3790
3076#if EV_MULTIPLICITY 3791#if EV_MULTIPLICITY
3077 #include "ev_wrap.h" 3792 #include "ev_wrap.h"
3078#endif 3793#endif
3079 3794
3080#ifdef __cplusplus 3795#ifdef __cplusplus

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