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Comparing libev/ev.c (file contents):
Revision 1.279 by root, Fri Feb 6 20:17:43 2009 UTC vs.
Revision 1.342 by root, Mon Mar 29 12:40:57 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
57# endif 57# endif
58# ifndef EV_USE_MONOTONIC 58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 59# define EV_USE_MONOTONIC 1
60# endif 60# endif
61# endif 61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
62# endif 64# endif
63 65
64# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
… …
77# endif 79# endif
78# endif 80# endif
79 81
80# ifndef EV_USE_NANOSLEEP 82# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP 83# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
83# else 85# else
84# define EV_USE_NANOSLEEP 0 86# define EV_USE_NANOSLEEP 0
85# endif 87# endif
86# endif 88# endif
87 89
88# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
90# define EV_USE_SELECT 1 92# define EV_USE_SELECT EV_FEATURE_BACKENDS
91# else 93# else
92# define EV_USE_SELECT 0 94# define EV_USE_SELECT 0
93# endif 95# endif
94# endif 96# endif
95 97
96# ifndef EV_USE_POLL 98# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H 99# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1 100# define EV_USE_POLL EV_FEATURE_BACKENDS
99# else 101# else
100# define EV_USE_POLL 0 102# define EV_USE_POLL 0
101# endif 103# endif
102# endif 104# endif
103 105
104# ifndef EV_USE_EPOLL 106# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 108# define EV_USE_EPOLL EV_FEATURE_BACKENDS
107# else 109# else
108# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
109# endif 111# endif
110# endif 112# endif
111 113
112# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
115# else 117# else
116# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
117# endif 119# endif
118# endif 120# endif
119 121
120# ifndef EV_USE_PORT 122# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 124# define EV_USE_PORT EV_FEATURE_BACKENDS
123# else 125# else
124# define EV_USE_PORT 0 126# define EV_USE_PORT 0
125# endif 127# endif
126# endif 128# endif
127 129
128# ifndef EV_USE_INOTIFY 130# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 132# define EV_USE_INOTIFY EV_FEATURE_OS
131# else 133# else
132# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
133# endif 135# endif
134# endif 136# endif
135 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD EV_FEATURE_OS
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
136# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
137# if HAVE_EVENTFD 147# if HAVE_EVENTFD
138# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD EV_FEATURE_OS
139# else 149# else
140# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
141# endif 151# endif
142# endif 152# endif
143 153
144#endif 154#endif
145 155
146#include <math.h> 156#include <math.h>
147#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
148#include <fcntl.h> 159#include <fcntl.h>
149#include <stddef.h> 160#include <stddef.h>
150 161
151#include <stdio.h> 162#include <stdio.h>
152 163
153#include <assert.h> 164#include <assert.h>
154#include <errno.h> 165#include <errno.h>
155#include <sys/types.h> 166#include <sys/types.h>
156#include <time.h> 167#include <time.h>
168#include <limits.h>
157 169
158#include <signal.h> 170#include <signal.h>
159 171
160#ifdef EV_H 172#ifdef EV_H
161# include EV_H 173# include EV_H
… …
172# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 185# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
176# endif 188# endif
189# undef EV_AVOID_STDIO
177#endif 190#endif
178 191
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 192/* this block tries to deduce configuration from header-defined symbols and defaults */
193
194/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG)
196/* use what's provided */
197#elif defined (NSIG)
198# define EV_NSIG (NSIG)
199#elif defined(_NSIG)
200# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX)
202# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX)
204# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX)
206# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG)
208# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG)
210# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE)
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig)
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else
216# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */
219# define EV_NSIG 65
220#endif
180 221
181#ifndef EV_USE_CLOCK_SYSCALL 222#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 223# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 224# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 225# else
185# define EV_USE_CLOCK_SYSCALL 0 226# define EV_USE_CLOCK_SYSCALL 0
186# endif 227# endif
187#endif 228#endif
188 229
189#ifndef EV_USE_MONOTONIC 230#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 232# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 233# else
193# define EV_USE_MONOTONIC 0 234# define EV_USE_MONOTONIC 0
194# endif 235# endif
195#endif 236#endif
196 237
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 240#endif
200 241
201#ifndef EV_USE_NANOSLEEP 242#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 243# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 244# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 245# else
205# define EV_USE_NANOSLEEP 0 246# define EV_USE_NANOSLEEP 0
206# endif 247# endif
207#endif 248#endif
208 249
209#ifndef EV_USE_SELECT 250#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 251# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 252#endif
212 253
213#ifndef EV_USE_POLL 254#ifndef EV_USE_POLL
214# ifdef _WIN32 255# ifdef _WIN32
215# define EV_USE_POLL 0 256# define EV_USE_POLL 0
216# else 257# else
217# define EV_USE_POLL 1 258# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 259# endif
219#endif 260#endif
220 261
221#ifndef EV_USE_EPOLL 262#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 264# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 265# else
225# define EV_USE_EPOLL 0 266# define EV_USE_EPOLL 0
226# endif 267# endif
227#endif 268#endif
228 269
… …
234# define EV_USE_PORT 0 275# define EV_USE_PORT 0
235#endif 276#endif
236 277
237#ifndef EV_USE_INOTIFY 278#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 280# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 281# else
241# define EV_USE_INOTIFY 0 282# define EV_USE_INOTIFY 0
242# endif 283# endif
243#endif 284#endif
244 285
245#ifndef EV_PID_HASHSIZE 286#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 287# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 288#endif
252 289
253#ifndef EV_INOTIFY_HASHSIZE 290#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 291# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 292#endif
260 293
261#ifndef EV_USE_EVENTFD 294#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 295# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 296# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 297# else
265# define EV_USE_EVENTFD 0 298# define EV_USE_EVENTFD 0
299# endif
300#endif
301
302#ifndef EV_USE_SIGNALFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_SIGNALFD EV_FEATURE_OS
305# else
306# define EV_USE_SIGNALFD 0
266# endif 307# endif
267#endif 308#endif
268 309
269#if 0 /* debugging */ 310#if 0 /* debugging */
270# define EV_VERIFY 3 311# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 312# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 313# define EV_HEAP_CACHE_AT 1
273#endif 314#endif
274 315
275#ifndef EV_VERIFY 316#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 317# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 318#endif
278 319
279#ifndef EV_USE_4HEAP 320#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 321# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 322#endif
282 323
283#ifndef EV_HEAP_CACHE_AT 324#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 325# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
326#endif
327
328/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
329/* which makes programs even slower. might work on other unices, too. */
330#if EV_USE_CLOCK_SYSCALL
331# include <syscall.h>
332# ifdef SYS_clock_gettime
333# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
334# undef EV_USE_MONOTONIC
335# define EV_USE_MONOTONIC 1
336# else
337# undef EV_USE_CLOCK_SYSCALL
338# define EV_USE_CLOCK_SYSCALL 0
339# endif
285#endif 340#endif
286 341
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 342/* this block fixes any misconfiguration where we know we run into trouble otherwise */
343
344#ifdef _AIX
345/* AIX has a completely broken poll.h header */
346# undef EV_USE_POLL
347# define EV_USE_POLL 0
348#endif
288 349
289#ifndef CLOCK_MONOTONIC 350#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 351# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 352# define EV_USE_MONOTONIC 0
292#endif 353#endif
… …
320 381
321#if EV_SELECT_IS_WINSOCKET 382#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 383# include <winsock.h>
323#endif 384#endif
324 385
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 386#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 387/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 388# include <stdint.h>
389# ifndef EFD_NONBLOCK
390# define EFD_NONBLOCK O_NONBLOCK
391# endif
392# ifndef EFD_CLOEXEC
393# ifdef O_CLOEXEC
394# define EFD_CLOEXEC O_CLOEXEC
395# else
396# define EFD_CLOEXEC 02000000
397# endif
398# endif
337# ifdef __cplusplus 399# ifdef __cplusplus
338extern "C" { 400extern "C" {
339# endif 401# endif
340int eventfd (unsigned int initval, int flags); 402int (eventfd) (unsigned int initval, int flags);
341# ifdef __cplusplus 403# ifdef __cplusplus
342} 404}
343# endif 405# endif
344#endif 406#endif
345 407
408#if EV_USE_SIGNALFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h>
411# ifndef SFD_NONBLOCK
412# define SFD_NONBLOCK O_NONBLOCK
413# endif
414# ifndef SFD_CLOEXEC
415# ifdef O_CLOEXEC
416# define SFD_CLOEXEC O_CLOEXEC
417# else
418# define SFD_CLOEXEC 02000000
419# endif
420# endif
421# ifdef __cplusplus
422extern "C" {
423# endif
424int signalfd (int fd, const sigset_t *mask, int flags);
425
426struct signalfd_siginfo
427{
428 uint32_t ssi_signo;
429 char pad[128 - sizeof (uint32_t)];
430};
431# ifdef __cplusplus
432}
433# endif
434#endif
435
436
346/**/ 437/**/
347 438
348#if EV_VERIFY >= 3 439#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 440# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 441#else
351# define EV_FREQUENT_CHECK do { } while (0) 442# define EV_FREQUENT_CHECK do { } while (0)
352#endif 443#endif
353 444
354/* 445/*
… …
361 */ 452 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363 454
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 455#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 456#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 457
368#if __GNUC__ >= 4 458#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 459# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 460# define noinline __attribute__ ((noinline))
371#else 461#else
… …
378 468
379#define expect_false(expr) expect ((expr) != 0, 0) 469#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 470#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 471#define inline_size static inline
382 472
383#if EV_MINIMAL 473#if EV_FEATURE_CODE
474# define inline_speed static inline
475#else
384# define inline_speed static noinline 476# define inline_speed static noinline
477#endif
478
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
480
481#if EV_MINPRI == EV_MAXPRI
482# define ABSPRI(w) (((W)w), 0)
385#else 483#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 484# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
485#endif
391 486
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 487#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 488#define EMPTY2(a,b) /* used to suppress some warnings */
394 489
395typedef ev_watcher *W; 490typedef ev_watcher *W;
… …
407 502
408#if EV_USE_MONOTONIC 503#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 505#endif
411 506
507#ifndef EV_FD_TO_WIN32_HANDLE
508# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
509#endif
510#ifndef EV_WIN32_HANDLE_TO_FD
511# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
512#endif
513#ifndef EV_WIN32_CLOSE_FD
514# define EV_WIN32_CLOSE_FD(fd) close (fd)
515#endif
516
412#ifdef _WIN32 517#ifdef _WIN32
413# include "ev_win32.c" 518# include "ev_win32.c"
414#endif 519#endif
415 520
416/*****************************************************************************/ 521/*****************************************************************************/
522
523#if EV_AVOID_STDIO
524static void noinline
525ev_printerr (const char *msg)
526{
527 write (STDERR_FILENO, msg, strlen (msg));
528}
529#endif
417 530
418static void (*syserr_cb)(const char *msg); 531static void (*syserr_cb)(const char *msg);
419 532
420void 533void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 534ev_set_syserr_cb (void (*cb)(const char *msg))
… …
431 544
432 if (syserr_cb) 545 if (syserr_cb)
433 syserr_cb (msg); 546 syserr_cb (msg);
434 else 547 else
435 { 548 {
549#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg);
553 ev_printerr (": ");
554 ev_printerr (err);
555 ev_printerr ("\n");
556#else
436 perror (msg); 557 perror (msg);
558#endif
437 abort (); 559 abort ();
438 } 560 }
439} 561}
440 562
441static void * 563static void *
442ev_realloc_emul (void *ptr, long size) 564ev_realloc_emul (void *ptr, long size)
443{ 565{
566#if __GLIBC__
567 return realloc (ptr, size);
568#else
444 /* some systems, notably openbsd and darwin, fail to properly 569 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 570 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 571 * the single unix specification, so work around them here.
447 */ 572 */
448 573
449 if (size) 574 if (size)
450 return realloc (ptr, size); 575 return realloc (ptr, size);
451 576
452 free (ptr); 577 free (ptr);
453 return 0; 578 return 0;
579#endif
454} 580}
455 581
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 583
458void 584void
… …
466{ 592{
467 ptr = alloc (ptr, size); 593 ptr = alloc (ptr, size);
468 594
469 if (!ptr && size) 595 if (!ptr && size)
470 { 596 {
597#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n");
599#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
601#endif
472 abort (); 602 abort ();
473 } 603 }
474 604
475 return ptr; 605 return ptr;
476} 606}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 608#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 609#define ev_free(ptr) ev_realloc ((ptr), 0)
480 610
481/*****************************************************************************/ 611/*****************************************************************************/
482 612
613/* set in reify when reification needed */
614#define EV_ANFD_REIFY 1
615
616/* file descriptor info structure */
483typedef struct 617typedef struct
484{ 618{
485 WL head; 619 WL head;
486 unsigned char events; 620 unsigned char events; /* the events watched for */
487 unsigned char reify; 621 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 623 unsigned char unused;
490#if EV_USE_EPOLL 624#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 625 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 626#endif
493#if EV_SELECT_IS_WINSOCKET 627#if EV_SELECT_IS_WINSOCKET
494 SOCKET handle; 628 SOCKET handle;
495#endif 629#endif
496} ANFD; 630} ANFD;
497 631
632/* stores the pending event set for a given watcher */
498typedef struct 633typedef struct
499{ 634{
500 W w; 635 W w;
501 int events; 636 int events; /* the pending event set for the given watcher */
502} ANPENDING; 637} ANPENDING;
503 638
504#if EV_USE_INOTIFY 639#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 640/* hash table entry per inotify-id */
506typedef struct 641typedef struct
… …
509} ANFS; 644} ANFS;
510#endif 645#endif
511 646
512/* Heap Entry */ 647/* Heap Entry */
513#if EV_HEAP_CACHE_AT 648#if EV_HEAP_CACHE_AT
649 /* a heap element */
514 typedef struct { 650 typedef struct {
515 ev_tstamp at; 651 ev_tstamp at;
516 WT w; 652 WT w;
517 } ANHE; 653 } ANHE;
518 654
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 655 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 656 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 657 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 658#else
659 /* a heap element */
523 typedef WT ANHE; 660 typedef WT ANHE;
524 661
525 #define ANHE_w(he) (he) 662 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 663 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 664 #define ANHE_at_cache(he)
… …
551 688
552 static int ev_default_loop_ptr; 689 static int ev_default_loop_ptr;
553 690
554#endif 691#endif
555 692
693#if EV_FEATURE_API
694# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
695# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
696# define EV_INVOKE_PENDING invoke_cb (EV_A)
697#else
698# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif
702
703#define EVUNLOOP_RECURSE 0x80
704
556/*****************************************************************************/ 705/*****************************************************************************/
557 706
707#ifndef EV_HAVE_EV_TIME
558ev_tstamp 708ev_tstamp
559ev_time (void) 709ev_time (void)
560{ 710{
561#if EV_USE_REALTIME 711#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 712 if (expect_true (have_realtime))
… …
569 719
570 struct timeval tv; 720 struct timeval tv;
571 gettimeofday (&tv, 0); 721 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 722 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 723}
724#endif
574 725
575ev_tstamp inline_size 726inline_size ev_tstamp
576get_clock (void) 727get_clock (void)
577{ 728{
578#if EV_USE_MONOTONIC 729#if EV_USE_MONOTONIC
579 if (expect_true (have_monotonic)) 730 if (expect_true (have_monotonic))
580 { 731 {
… …
614 765
615 tv.tv_sec = (time_t)delay; 766 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617 768
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 770 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 771 /* by older ones */
621 select (0, 0, 0, 0, &tv); 772 select (0, 0, 0, 0, &tv);
622#endif 773#endif
623 } 774 }
624} 775}
625 776
626/*****************************************************************************/ 777/*****************************************************************************/
627 778
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 780
630int inline_size 781/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */
783inline_size int
631array_nextsize (int elem, int cur, int cnt) 784array_nextsize (int elem, int cur, int cnt)
632{ 785{
633 int ncur = cur + 1; 786 int ncur = cur + 1;
634 787
635 do 788 do
… …
676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 829 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
677 } 830 }
678#endif 831#endif
679 832
680#define array_free(stem, idx) \ 833#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 834 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 835
683/*****************************************************************************/ 836/*****************************************************************************/
837
838/* dummy callback for pending events */
839static void noinline
840pendingcb (EV_P_ ev_prepare *w, int revents)
841{
842}
684 843
685void noinline 844void noinline
686ev_feed_event (EV_P_ void *w, int revents) 845ev_feed_event (EV_P_ void *w, int revents)
687{ 846{
688 W w_ = (W)w; 847 W w_ = (W)w;
… …
697 pendings [pri][w_->pending - 1].w = w_; 856 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 857 pendings [pri][w_->pending - 1].events = revents;
699 } 858 }
700} 859}
701 860
702void inline_speed 861inline_speed void
862feed_reverse (EV_P_ W w)
863{
864 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
865 rfeeds [rfeedcnt++] = w;
866}
867
868inline_size void
869feed_reverse_done (EV_P_ int revents)
870{
871 do
872 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
873 while (rfeedcnt);
874}
875
876inline_speed void
703queue_events (EV_P_ W *events, int eventcnt, int type) 877queue_events (EV_P_ W *events, int eventcnt, int type)
704{ 878{
705 int i; 879 int i;
706 880
707 for (i = 0; i < eventcnt; ++i) 881 for (i = 0; i < eventcnt; ++i)
708 ev_feed_event (EV_A_ events [i], type); 882 ev_feed_event (EV_A_ events [i], type);
709} 883}
710 884
711/*****************************************************************************/ 885/*****************************************************************************/
712 886
713void inline_speed 887inline_speed void
714fd_event (EV_P_ int fd, int revents) 888fd_event_nocheck (EV_P_ int fd, int revents)
715{ 889{
716 ANFD *anfd = anfds + fd; 890 ANFD *anfd = anfds + fd;
717 ev_io *w; 891 ev_io *w;
718 892
719 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 893 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
723 if (ev) 897 if (ev)
724 ev_feed_event (EV_A_ (W)w, ev); 898 ev_feed_event (EV_A_ (W)w, ev);
725 } 899 }
726} 900}
727 901
902/* do not submit kernel events for fds that have reify set */
903/* because that means they changed while we were polling for new events */
904inline_speed void
905fd_event (EV_P_ int fd, int revents)
906{
907 ANFD *anfd = anfds + fd;
908
909 if (expect_true (!anfd->reify))
910 fd_event_nocheck (EV_A_ fd, revents);
911}
912
728void 913void
729ev_feed_fd_event (EV_P_ int fd, int revents) 914ev_feed_fd_event (EV_P_ int fd, int revents)
730{ 915{
731 if (fd >= 0 && fd < anfdmax) 916 if (fd >= 0 && fd < anfdmax)
732 fd_event (EV_A_ fd, revents); 917 fd_event_nocheck (EV_A_ fd, revents);
733} 918}
734 919
735void inline_size 920/* make sure the external fd watch events are in-sync */
921/* with the kernel/libev internal state */
922inline_size void
736fd_reify (EV_P) 923fd_reify (EV_P)
737{ 924{
738 int i; 925 int i;
739 926
740 for (i = 0; i < fdchangecnt; ++i) 927 for (i = 0; i < fdchangecnt; ++i)
… …
750 937
751#if EV_SELECT_IS_WINSOCKET 938#if EV_SELECT_IS_WINSOCKET
752 if (events) 939 if (events)
753 { 940 {
754 unsigned long arg; 941 unsigned long arg;
755 #ifdef EV_FD_TO_WIN32_HANDLE
756 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
757 #else
758 anfd->handle = _get_osfhandle (fd);
759 #endif
760 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
761 } 944 }
762#endif 945#endif
763 946
764 { 947 {
… …
766 unsigned char o_reify = anfd->reify; 949 unsigned char o_reify = anfd->reify;
767 950
768 anfd->reify = 0; 951 anfd->reify = 0;
769 anfd->events = events; 952 anfd->events = events;
770 953
771 if (o_events != events || o_reify & EV_IOFDSET) 954 if (o_events != events || o_reify & EV__IOFDSET)
772 backend_modify (EV_A_ fd, o_events, events); 955 backend_modify (EV_A_ fd, o_events, events);
773 } 956 }
774 } 957 }
775 958
776 fdchangecnt = 0; 959 fdchangecnt = 0;
777} 960}
778 961
779void inline_size 962/* something about the given fd changed */
963inline_size void
780fd_change (EV_P_ int fd, int flags) 964fd_change (EV_P_ int fd, int flags)
781{ 965{
782 unsigned char reify = anfds [fd].reify; 966 unsigned char reify = anfds [fd].reify;
783 anfds [fd].reify |= flags; 967 anfds [fd].reify |= flags;
784 968
… …
788 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 972 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789 fdchanges [fdchangecnt - 1] = fd; 973 fdchanges [fdchangecnt - 1] = fd;
790 } 974 }
791} 975}
792 976
793void inline_speed 977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void
794fd_kill (EV_P_ int fd) 979fd_kill (EV_P_ int fd)
795{ 980{
796 ev_io *w; 981 ev_io *w;
797 982
798 while ((w = (ev_io *)anfds [fd].head)) 983 while ((w = (ev_io *)anfds [fd].head))
… …
800 ev_io_stop (EV_A_ w); 985 ev_io_stop (EV_A_ w);
801 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
802 } 987 }
803} 988}
804 989
805int inline_size 990/* check whether the given fd is actually valid, for error recovery */
991inline_size int
806fd_valid (int fd) 992fd_valid (int fd)
807{ 993{
808#ifdef _WIN32 994#ifdef _WIN32
809 return _get_osfhandle (fd) != -1; 995 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
810#else 996#else
811 return fcntl (fd, F_GETFD) != -1; 997 return fcntl (fd, F_GETFD) != -1;
812#endif 998#endif
813} 999}
814 1000
… …
832 1018
833 for (fd = anfdmax; fd--; ) 1019 for (fd = anfdmax; fd--; )
834 if (anfds [fd].events) 1020 if (anfds [fd].events)
835 { 1021 {
836 fd_kill (EV_A_ fd); 1022 fd_kill (EV_A_ fd);
837 return; 1023 break;
838 } 1024 }
839} 1025}
840 1026
841/* usually called after fork if backend needs to re-arm all fds from scratch */ 1027/* usually called after fork if backend needs to re-arm all fds from scratch */
842static void noinline 1028static void noinline
… …
847 for (fd = 0; fd < anfdmax; ++fd) 1033 for (fd = 0; fd < anfdmax; ++fd)
848 if (anfds [fd].events) 1034 if (anfds [fd].events)
849 { 1035 {
850 anfds [fd].events = 0; 1036 anfds [fd].events = 0;
851 anfds [fd].emask = 0; 1037 anfds [fd].emask = 0;
852 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1038 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853 } 1039 }
1040}
1041
1042/* used to prepare libev internal fd's */
1043/* this is not fork-safe */
1044inline_speed void
1045fd_intern (int fd)
1046{
1047#ifdef _WIN32
1048 unsigned long arg = 1;
1049 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1050#else
1051 fcntl (fd, F_SETFD, FD_CLOEXEC);
1052 fcntl (fd, F_SETFL, O_NONBLOCK);
1053#endif
854} 1054}
855 1055
856/*****************************************************************************/ 1056/*****************************************************************************/
857 1057
858/* 1058/*
… …
873#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1073#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1074#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875#define UPHEAP_DONE(p,k) ((p) == (k)) 1075#define UPHEAP_DONE(p,k) ((p) == (k))
876 1076
877/* away from the root */ 1077/* away from the root */
878void inline_speed 1078inline_speed void
879downheap (ANHE *heap, int N, int k) 1079downheap (ANHE *heap, int N, int k)
880{ 1080{
881 ANHE he = heap [k]; 1081 ANHE he = heap [k];
882 ANHE *E = heap + N + HEAP0; 1082 ANHE *E = heap + N + HEAP0;
883 1083
… …
923#define HEAP0 1 1123#define HEAP0 1
924#define HPARENT(k) ((k) >> 1) 1124#define HPARENT(k) ((k) >> 1)
925#define UPHEAP_DONE(p,k) (!(p)) 1125#define UPHEAP_DONE(p,k) (!(p))
926 1126
927/* away from the root */ 1127/* away from the root */
928void inline_speed 1128inline_speed void
929downheap (ANHE *heap, int N, int k) 1129downheap (ANHE *heap, int N, int k)
930{ 1130{
931 ANHE he = heap [k]; 1131 ANHE he = heap [k];
932 1132
933 for (;;) 1133 for (;;)
934 { 1134 {
935 int c = k << 1; 1135 int c = k << 1;
936 1136
937 if (c > N + HEAP0 - 1) 1137 if (c >= N + HEAP0)
938 break; 1138 break;
939 1139
940 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1140 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
941 ? 1 : 0; 1141 ? 1 : 0;
942 1142
… …
953 ev_active (ANHE_w (he)) = k; 1153 ev_active (ANHE_w (he)) = k;
954} 1154}
955#endif 1155#endif
956 1156
957/* towards the root */ 1157/* towards the root */
958void inline_speed 1158inline_speed void
959upheap (ANHE *heap, int k) 1159upheap (ANHE *heap, int k)
960{ 1160{
961 ANHE he = heap [k]; 1161 ANHE he = heap [k];
962 1162
963 for (;;) 1163 for (;;)
… …
974 1174
975 heap [k] = he; 1175 heap [k] = he;
976 ev_active (ANHE_w (he)) = k; 1176 ev_active (ANHE_w (he)) = k;
977} 1177}
978 1178
979void inline_size 1179/* move an element suitably so it is in a correct place */
1180inline_size void
980adjustheap (ANHE *heap, int N, int k) 1181adjustheap (ANHE *heap, int N, int k)
981{ 1182{
982 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1183 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
983 upheap (heap, k); 1184 upheap (heap, k);
984 else 1185 else
985 downheap (heap, N, k); 1186 downheap (heap, N, k);
986} 1187}
987 1188
988/* rebuild the heap: this function is used only once and executed rarely */ 1189/* rebuild the heap: this function is used only once and executed rarely */
989void inline_size 1190inline_size void
990reheap (ANHE *heap, int N) 1191reheap (ANHE *heap, int N)
991{ 1192{
992 int i; 1193 int i;
993 1194
994 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1195 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
997 upheap (heap, i + HEAP0); 1198 upheap (heap, i + HEAP0);
998} 1199}
999 1200
1000/*****************************************************************************/ 1201/*****************************************************************************/
1001 1202
1203/* associate signal watchers to a signal signal */
1002typedef struct 1204typedef struct
1003{ 1205{
1206 EV_ATOMIC_T pending;
1207#if EV_MULTIPLICITY
1208 EV_P;
1209#endif
1004 WL head; 1210 WL head;
1005 EV_ATOMIC_T gotsig;
1006} ANSIG; 1211} ANSIG;
1007 1212
1008static ANSIG *signals; 1213static ANSIG signals [EV_NSIG - 1];
1009static int signalmax;
1010
1011static EV_ATOMIC_T gotsig;
1012 1214
1013/*****************************************************************************/ 1215/*****************************************************************************/
1014 1216
1015void inline_speed 1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1016fd_intern (int fd)
1017{
1018#ifdef _WIN32
1019 unsigned long arg = 1;
1020 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1021#else
1022 fcntl (fd, F_SETFD, FD_CLOEXEC);
1023 fcntl (fd, F_SETFL, O_NONBLOCK);
1024#endif
1025}
1026 1218
1027static void noinline 1219static void noinline
1028evpipe_init (EV_P) 1220evpipe_init (EV_P)
1029{ 1221{
1030 if (!ev_is_active (&pipeev)) 1222 if (!ev_is_active (&pipe_w))
1031 { 1223 {
1032#if EV_USE_EVENTFD 1224# if EV_USE_EVENTFD
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL)
1033 if ((evfd = eventfd (0, 0)) >= 0) 1227 evfd = eventfd (0, 0);
1228
1229 if (evfd >= 0)
1034 { 1230 {
1035 evpipe [0] = -1; 1231 evpipe [0] = -1;
1036 fd_intern (evfd); 1232 fd_intern (evfd); /* doing it twice doesn't hurt */
1037 ev_io_set (&pipeev, evfd, EV_READ); 1233 ev_io_set (&pipe_w, evfd, EV_READ);
1038 } 1234 }
1039 else 1235 else
1040#endif 1236# endif
1041 { 1237 {
1042 while (pipe (evpipe)) 1238 while (pipe (evpipe))
1043 ev_syserr ("(libev) error creating signal/async pipe"); 1239 ev_syserr ("(libev) error creating signal/async pipe");
1044 1240
1045 fd_intern (evpipe [0]); 1241 fd_intern (evpipe [0]);
1046 fd_intern (evpipe [1]); 1242 fd_intern (evpipe [1]);
1047 ev_io_set (&pipeev, evpipe [0], EV_READ); 1243 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048 } 1244 }
1049 1245
1050 ev_io_start (EV_A_ &pipeev); 1246 ev_io_start (EV_A_ &pipe_w);
1051 ev_unref (EV_A); /* watcher should not keep loop alive */ 1247 ev_unref (EV_A); /* watcher should not keep loop alive */
1052 } 1248 }
1053} 1249}
1054 1250
1055void inline_size 1251inline_size void
1056evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057{ 1253{
1058 if (!*flag) 1254 if (!*flag)
1059 { 1255 {
1060 int old_errno = errno; /* save errno because write might clobber it */ 1256 int old_errno = errno; /* save errno because write might clobber it */
1257 char dummy;
1061 1258
1062 *flag = 1; 1259 *flag = 1;
1063 1260
1064#if EV_USE_EVENTFD 1261#if EV_USE_EVENTFD
1065 if (evfd >= 0) 1262 if (evfd >= 0)
… …
1067 uint64_t counter = 1; 1264 uint64_t counter = 1;
1068 write (evfd, &counter, sizeof (uint64_t)); 1265 write (evfd, &counter, sizeof (uint64_t));
1069 } 1266 }
1070 else 1267 else
1071#endif 1268#endif
1072 write (evpipe [1], &old_errno, 1); 1269 write (evpipe [1], &dummy, 1);
1073 1270
1074 errno = old_errno; 1271 errno = old_errno;
1075 } 1272 }
1076} 1273}
1077 1274
1275/* called whenever the libev signal pipe */
1276/* got some events (signal, async) */
1078static void 1277static void
1079pipecb (EV_P_ ev_io *iow, int revents) 1278pipecb (EV_P_ ev_io *iow, int revents)
1080{ 1279{
1280 int i;
1281
1081#if EV_USE_EVENTFD 1282#if EV_USE_EVENTFD
1082 if (evfd >= 0) 1283 if (evfd >= 0)
1083 { 1284 {
1084 uint64_t counter; 1285 uint64_t counter;
1085 read (evfd, &counter, sizeof (uint64_t)); 1286 read (evfd, &counter, sizeof (uint64_t));
… …
1089 { 1290 {
1090 char dummy; 1291 char dummy;
1091 read (evpipe [0], &dummy, 1); 1292 read (evpipe [0], &dummy, 1);
1092 } 1293 }
1093 1294
1094 if (gotsig && ev_is_default_loop (EV_A)) 1295 if (sig_pending)
1095 { 1296 {
1096 int signum; 1297 sig_pending = 0;
1097 gotsig = 0;
1098 1298
1099 for (signum = signalmax; signum--; ) 1299 for (i = EV_NSIG - 1; i--; )
1100 if (signals [signum].gotsig) 1300 if (expect_false (signals [i].pending))
1101 ev_feed_signal_event (EV_A_ signum + 1); 1301 ev_feed_signal_event (EV_A_ i + 1);
1102 } 1302 }
1103 1303
1104#if EV_ASYNC_ENABLE 1304#if EV_ASYNC_ENABLE
1105 if (gotasync) 1305 if (async_pending)
1106 { 1306 {
1107 int i; 1307 async_pending = 0;
1108 gotasync = 0;
1109 1308
1110 for (i = asynccnt; i--; ) 1309 for (i = asynccnt; i--; )
1111 if (asyncs [i]->sent) 1310 if (asyncs [i]->sent)
1112 { 1311 {
1113 asyncs [i]->sent = 0; 1312 asyncs [i]->sent = 0;
… …
1121 1320
1122static void 1321static void
1123ev_sighandler (int signum) 1322ev_sighandler (int signum)
1124{ 1323{
1125#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1126 struct ev_loop *loop = &default_loop_struct; 1325 EV_P = signals [signum - 1].loop;
1127#endif 1326#endif
1128 1327
1129#if _WIN32 1328#ifdef _WIN32
1130 signal (signum, ev_sighandler); 1329 signal (signum, ev_sighandler);
1131#endif 1330#endif
1132 1331
1133 signals [signum - 1].gotsig = 1; 1332 signals [signum - 1].pending = 1;
1134 evpipe_write (EV_A_ &gotsig); 1333 evpipe_write (EV_A_ &sig_pending);
1135} 1334}
1136 1335
1137void noinline 1336void noinline
1138ev_feed_signal_event (EV_P_ int signum) 1337ev_feed_signal_event (EV_P_ int signum)
1139{ 1338{
1140 WL w; 1339 WL w;
1141 1340
1341 if (expect_false (signum <= 0 || signum > EV_NSIG))
1342 return;
1343
1344 --signum;
1345
1142#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
1143 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1347 /* it is permissible to try to feed a signal to the wrong loop */
1144#endif 1348 /* or, likely more useful, feeding a signal nobody is waiting for */
1145 1349
1146 --signum; 1350 if (expect_false (signals [signum].loop != EV_A))
1147
1148 if (signum < 0 || signum >= signalmax)
1149 return; 1351 return;
1352#endif
1150 1353
1151 signals [signum].gotsig = 0; 1354 signals [signum].pending = 0;
1152 1355
1153 for (w = signals [signum].head; w; w = w->next) 1356 for (w = signals [signum].head; w; w = w->next)
1154 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155} 1358}
1156 1359
1360#if EV_USE_SIGNALFD
1361static void
1362sigfdcb (EV_P_ ev_io *iow, int revents)
1363{
1364 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1365
1366 for (;;)
1367 {
1368 ssize_t res = read (sigfd, si, sizeof (si));
1369
1370 /* not ISO-C, as res might be -1, but works with SuS */
1371 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1372 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1373
1374 if (res < (ssize_t)sizeof (si))
1375 break;
1376 }
1377}
1378#endif
1379
1380#endif
1381
1157/*****************************************************************************/ 1382/*****************************************************************************/
1158 1383
1384#if EV_CHILD_ENABLE
1159static WL childs [EV_PID_HASHSIZE]; 1385static WL childs [EV_PID_HASHSIZE];
1160
1161#ifndef _WIN32
1162 1386
1163static ev_signal childev; 1387static ev_signal childev;
1164 1388
1165#ifndef WIFCONTINUED 1389#ifndef WIFCONTINUED
1166# define WIFCONTINUED(status) 0 1390# define WIFCONTINUED(status) 0
1167#endif 1391#endif
1168 1392
1169void inline_speed 1393/* handle a single child status event */
1394inline_speed void
1170child_reap (EV_P_ int chain, int pid, int status) 1395child_reap (EV_P_ int chain, int pid, int status)
1171{ 1396{
1172 ev_child *w; 1397 ev_child *w;
1173 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1398 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174 1399
1175 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1400 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1176 { 1401 {
1177 if ((w->pid == pid || !w->pid) 1402 if ((w->pid == pid || !w->pid)
1178 && (!traced || (w->flags & 1))) 1403 && (!traced || (w->flags & 1)))
1179 { 1404 {
1180 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1405 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1187 1412
1188#ifndef WCONTINUED 1413#ifndef WCONTINUED
1189# define WCONTINUED 0 1414# define WCONTINUED 0
1190#endif 1415#endif
1191 1416
1417/* called on sigchld etc., calls waitpid */
1192static void 1418static void
1193childcb (EV_P_ ev_signal *sw, int revents) 1419childcb (EV_P_ ev_signal *sw, int revents)
1194{ 1420{
1195 int pid, status; 1421 int pid, status;
1196 1422
… …
1204 /* make sure we are called again until all children have been reaped */ 1430 /* make sure we are called again until all children have been reaped */
1205 /* we need to do it this way so that the callback gets called before we continue */ 1431 /* we need to do it this way so that the callback gets called before we continue */
1206 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1432 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1207 1433
1208 child_reap (EV_A_ pid, pid, status); 1434 child_reap (EV_A_ pid, pid, status);
1209 if (EV_PID_HASHSIZE > 1) 1435 if ((EV_PID_HASHSIZE) > 1)
1210 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1436 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1211} 1437}
1212 1438
1213#endif 1439#endif
1214 1440
… …
1281#ifdef __APPLE__ 1507#ifdef __APPLE__
1282 /* only select works correctly on that "unix-certified" platform */ 1508 /* only select works correctly on that "unix-certified" platform */
1283 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1509 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1284 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1510 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1285#endif 1511#endif
1512#ifdef __FreeBSD__
1513 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1514#endif
1286 1515
1287 return flags; 1516 return flags;
1288} 1517}
1289 1518
1290unsigned int 1519unsigned int
… …
1303ev_backend (EV_P) 1532ev_backend (EV_P)
1304{ 1533{
1305 return backend; 1534 return backend;
1306} 1535}
1307 1536
1537#if EV_FEATURE_API
1308unsigned int 1538unsigned int
1309ev_loop_count (EV_P) 1539ev_iteration (EV_P)
1310{ 1540{
1311 return loop_count; 1541 return loop_count;
1312} 1542}
1313 1543
1544unsigned int
1545ev_depth (EV_P)
1546{
1547 return loop_depth;
1548}
1549
1314void 1550void
1315ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1551ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316{ 1552{
1317 io_blocktime = interval; 1553 io_blocktime = interval;
1318} 1554}
… …
1321ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1557ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322{ 1558{
1323 timeout_blocktime = interval; 1559 timeout_blocktime = interval;
1324} 1560}
1325 1561
1562void
1563ev_set_userdata (EV_P_ void *data)
1564{
1565 userdata = data;
1566}
1567
1568void *
1569ev_userdata (EV_P)
1570{
1571 return userdata;
1572}
1573
1574void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1575{
1576 invoke_cb = invoke_pending_cb;
1577}
1578
1579void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1580{
1581 release_cb = release;
1582 acquire_cb = acquire;
1583}
1584#endif
1585
1586/* initialise a loop structure, must be zero-initialised */
1326static void noinline 1587static void noinline
1327loop_init (EV_P_ unsigned int flags) 1588loop_init (EV_P_ unsigned int flags)
1328{ 1589{
1329 if (!backend) 1590 if (!backend)
1330 { 1591 {
… …
1346 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1607 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347 have_monotonic = 1; 1608 have_monotonic = 1;
1348 } 1609 }
1349#endif 1610#endif
1350 1611
1612 /* pid check not overridable via env */
1613#ifndef _WIN32
1614 if (flags & EVFLAG_FORKCHECK)
1615 curpid = getpid ();
1616#endif
1617
1618 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS"));
1622
1351 ev_rt_now = ev_time (); 1623 ev_rt_now = ev_time ();
1352 mn_now = get_clock (); 1624 mn_now = get_clock ();
1353 now_floor = mn_now; 1625 now_floor = mn_now;
1354 rtmn_diff = ev_rt_now - mn_now; 1626 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_FEATURE_API
1628 invoke_cb = ev_invoke_pending;
1629#endif
1355 1630
1356 io_blocktime = 0.; 1631 io_blocktime = 0.;
1357 timeout_blocktime = 0.; 1632 timeout_blocktime = 0.;
1358 backend = 0; 1633 backend = 0;
1359 backend_fd = -1; 1634 backend_fd = -1;
1360 gotasync = 0; 1635 sig_pending = 0;
1636#if EV_ASYNC_ENABLE
1637 async_pending = 0;
1638#endif
1361#if EV_USE_INOTIFY 1639#if EV_USE_INOTIFY
1362 fs_fd = -2; 1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1363#endif 1641#endif
1364 1642#if EV_USE_SIGNALFD
1365 /* pid check not overridable via env */ 1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1366#ifndef _WIN32
1367 if (flags & EVFLAG_FORKCHECK)
1368 curpid = getpid ();
1369#endif 1644#endif
1370
1371 if (!(flags & EVFLAG_NOENV)
1372 && !enable_secure ()
1373 && getenv ("LIBEV_FLAGS"))
1374 flags = atoi (getenv ("LIBEV_FLAGS"));
1375 1645
1376 if (!(flags & 0x0000ffffU)) 1646 if (!(flags & 0x0000ffffU))
1377 flags |= ev_recommended_backends (); 1647 flags |= ev_recommended_backends ();
1378 1648
1379#if EV_USE_PORT 1649#if EV_USE_PORT
… …
1390#endif 1660#endif
1391#if EV_USE_SELECT 1661#if EV_USE_SELECT
1392 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1662 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393#endif 1663#endif
1394 1664
1665 ev_prepare_init (&pending_w, pendingcb);
1666
1667#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1395 ev_init (&pipeev, pipecb); 1668 ev_init (&pipe_w, pipecb);
1396 ev_set_priority (&pipeev, EV_MAXPRI); 1669 ev_set_priority (&pipe_w, EV_MAXPRI);
1670#endif
1397 } 1671 }
1398} 1672}
1399 1673
1674/* free up a loop structure */
1400static void noinline 1675static void noinline
1401loop_destroy (EV_P) 1676loop_destroy (EV_P)
1402{ 1677{
1403 int i; 1678 int i;
1404 1679
1405 if (ev_is_active (&pipeev)) 1680 if (ev_is_active (&pipe_w))
1406 { 1681 {
1407 ev_ref (EV_A); /* signal watcher */ 1682 /*ev_ref (EV_A);*/
1408 ev_io_stop (EV_A_ &pipeev); 1683 /*ev_io_stop (EV_A_ &pipe_w);*/
1409 1684
1410#if EV_USE_EVENTFD 1685#if EV_USE_EVENTFD
1411 if (evfd >= 0) 1686 if (evfd >= 0)
1412 close (evfd); 1687 close (evfd);
1413#endif 1688#endif
1414 1689
1415 if (evpipe [0] >= 0) 1690 if (evpipe [0] >= 0)
1416 { 1691 {
1417 close (evpipe [0]); 1692 EV_WIN32_CLOSE_FD (evpipe [0]);
1418 close (evpipe [1]); 1693 EV_WIN32_CLOSE_FD (evpipe [1]);
1419 } 1694 }
1420 } 1695 }
1696
1697#if EV_USE_SIGNALFD
1698 if (ev_is_active (&sigfd_w))
1699 close (sigfd);
1700#endif
1421 1701
1422#if EV_USE_INOTIFY 1702#if EV_USE_INOTIFY
1423 if (fs_fd >= 0) 1703 if (fs_fd >= 0)
1424 close (fs_fd); 1704 close (fs_fd);
1425#endif 1705#endif
… …
1449#if EV_IDLE_ENABLE 1729#if EV_IDLE_ENABLE
1450 array_free (idle, [i]); 1730 array_free (idle, [i]);
1451#endif 1731#endif
1452 } 1732 }
1453 1733
1454 ev_free (anfds); anfdmax = 0; 1734 ev_free (anfds); anfds = 0; anfdmax = 0;
1455 1735
1456 /* have to use the microsoft-never-gets-it-right macro */ 1736 /* have to use the microsoft-never-gets-it-right macro */
1737 array_free (rfeed, EMPTY);
1457 array_free (fdchange, EMPTY); 1738 array_free (fdchange, EMPTY);
1458 array_free (timer, EMPTY); 1739 array_free (timer, EMPTY);
1459#if EV_PERIODIC_ENABLE 1740#if EV_PERIODIC_ENABLE
1460 array_free (periodic, EMPTY); 1741 array_free (periodic, EMPTY);
1461#endif 1742#endif
… …
1470 1751
1471 backend = 0; 1752 backend = 0;
1472} 1753}
1473 1754
1474#if EV_USE_INOTIFY 1755#if EV_USE_INOTIFY
1475void inline_size infy_fork (EV_P); 1756inline_size void infy_fork (EV_P);
1476#endif 1757#endif
1477 1758
1478void inline_size 1759inline_size void
1479loop_fork (EV_P) 1760loop_fork (EV_P)
1480{ 1761{
1481#if EV_USE_PORT 1762#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1763 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483#endif 1764#endif
… …
1489#endif 1770#endif
1490#if EV_USE_INOTIFY 1771#if EV_USE_INOTIFY
1491 infy_fork (EV_A); 1772 infy_fork (EV_A);
1492#endif 1773#endif
1493 1774
1494 if (ev_is_active (&pipeev)) 1775 if (ev_is_active (&pipe_w))
1495 { 1776 {
1496 /* this "locks" the handlers against writing to the pipe */ 1777 /* this "locks" the handlers against writing to the pipe */
1497 /* while we modify the fd vars */ 1778 /* while we modify the fd vars */
1498 gotsig = 1; 1779 sig_pending = 1;
1499#if EV_ASYNC_ENABLE 1780#if EV_ASYNC_ENABLE
1500 gotasync = 1; 1781 async_pending = 1;
1501#endif 1782#endif
1502 1783
1503 ev_ref (EV_A); 1784 ev_ref (EV_A);
1504 ev_io_stop (EV_A_ &pipeev); 1785 ev_io_stop (EV_A_ &pipe_w);
1505 1786
1506#if EV_USE_EVENTFD 1787#if EV_USE_EVENTFD
1507 if (evfd >= 0) 1788 if (evfd >= 0)
1508 close (evfd); 1789 close (evfd);
1509#endif 1790#endif
1510 1791
1511 if (evpipe [0] >= 0) 1792 if (evpipe [0] >= 0)
1512 { 1793 {
1513 close (evpipe [0]); 1794 EV_WIN32_CLOSE_FD (evpipe [0]);
1514 close (evpipe [1]); 1795 EV_WIN32_CLOSE_FD (evpipe [1]);
1515 } 1796 }
1516 1797
1798#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1517 evpipe_init (EV_A); 1799 evpipe_init (EV_A);
1518 /* now iterate over everything, in case we missed something */ 1800 /* now iterate over everything, in case we missed something */
1519 pipecb (EV_A_ &pipeev, EV_READ); 1801 pipecb (EV_A_ &pipe_w, EV_READ);
1802#endif
1520 } 1803 }
1521 1804
1522 postfork = 0; 1805 postfork = 0;
1523} 1806}
1524 1807
1525#if EV_MULTIPLICITY 1808#if EV_MULTIPLICITY
1526 1809
1527struct ev_loop * 1810struct ev_loop *
1528ev_loop_new (unsigned int flags) 1811ev_loop_new (unsigned int flags)
1529{ 1812{
1530 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1813 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531 1814
1532 memset (loop, 0, sizeof (struct ev_loop)); 1815 memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534 loop_init (EV_A_ flags); 1816 loop_init (EV_A_ flags);
1535 1817
1536 if (ev_backend (EV_A)) 1818 if (ev_backend (EV_A))
1537 return loop; 1819 return EV_A;
1538 1820
1539 return 0; 1821 return 0;
1540} 1822}
1541 1823
1542void 1824void
… …
1549void 1831void
1550ev_loop_fork (EV_P) 1832ev_loop_fork (EV_P)
1551{ 1833{
1552 postfork = 1; /* must be in line with ev_default_fork */ 1834 postfork = 1; /* must be in line with ev_default_fork */
1553} 1835}
1836#endif /* multiplicity */
1554 1837
1555#if EV_VERIFY 1838#if EV_VERIFY
1556static void noinline 1839static void noinline
1557verify_watcher (EV_P_ W w) 1840verify_watcher (EV_P_ W w)
1558{ 1841{
… …
1586 verify_watcher (EV_A_ ws [cnt]); 1869 verify_watcher (EV_A_ ws [cnt]);
1587 } 1870 }
1588} 1871}
1589#endif 1872#endif
1590 1873
1874#if EV_FEATURE_API
1591void 1875void
1592ev_loop_verify (EV_P) 1876ev_verify (EV_P)
1593{ 1877{
1594#if EV_VERIFY 1878#if EV_VERIFY
1595 int i; 1879 int i;
1596 WL w; 1880 WL w;
1597 1881
… …
1636#if EV_ASYNC_ENABLE 1920#if EV_ASYNC_ENABLE
1637 assert (asyncmax >= asynccnt); 1921 assert (asyncmax >= asynccnt);
1638 array_verify (EV_A_ (W *)asyncs, asynccnt); 1922 array_verify (EV_A_ (W *)asyncs, asynccnt);
1639#endif 1923#endif
1640 1924
1925#if EV_PREPARE_ENABLE
1641 assert (preparemax >= preparecnt); 1926 assert (preparemax >= preparecnt);
1642 array_verify (EV_A_ (W *)prepares, preparecnt); 1927 array_verify (EV_A_ (W *)prepares, preparecnt);
1928#endif
1643 1929
1930#if EV_CHECK_ENABLE
1644 assert (checkmax >= checkcnt); 1931 assert (checkmax >= checkcnt);
1645 array_verify (EV_A_ (W *)checks, checkcnt); 1932 array_verify (EV_A_ (W *)checks, checkcnt);
1933#endif
1646 1934
1647# if 0 1935# if 0
1936#if EV_CHILD_ENABLE
1648 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1937 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1649 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1938 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1650# endif 1939#endif
1651#endif 1940# endif
1941#endif
1652} 1942}
1653 1943#endif
1654#endif /* multiplicity */
1655 1944
1656#if EV_MULTIPLICITY 1945#if EV_MULTIPLICITY
1657struct ev_loop * 1946struct ev_loop *
1658ev_default_loop_init (unsigned int flags) 1947ev_default_loop_init (unsigned int flags)
1659#else 1948#else
… …
1662#endif 1951#endif
1663{ 1952{
1664 if (!ev_default_loop_ptr) 1953 if (!ev_default_loop_ptr)
1665 { 1954 {
1666#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1956 EV_P = ev_default_loop_ptr = &default_loop_struct;
1668#else 1957#else
1669 ev_default_loop_ptr = 1; 1958 ev_default_loop_ptr = 1;
1670#endif 1959#endif
1671 1960
1672 loop_init (EV_A_ flags); 1961 loop_init (EV_A_ flags);
1673 1962
1674 if (ev_backend (EV_A)) 1963 if (ev_backend (EV_A))
1675 { 1964 {
1676#ifndef _WIN32 1965#if EV_CHILD_ENABLE
1677 ev_signal_init (&childev, childcb, SIGCHLD); 1966 ev_signal_init (&childev, childcb, SIGCHLD);
1678 ev_set_priority (&childev, EV_MAXPRI); 1967 ev_set_priority (&childev, EV_MAXPRI);
1679 ev_signal_start (EV_A_ &childev); 1968 ev_signal_start (EV_A_ &childev);
1680 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1969 ev_unref (EV_A); /* child watcher should not keep loop alive */
1681#endif 1970#endif
… …
1689 1978
1690void 1979void
1691ev_default_destroy (void) 1980ev_default_destroy (void)
1692{ 1981{
1693#if EV_MULTIPLICITY 1982#if EV_MULTIPLICITY
1694 struct ev_loop *loop = ev_default_loop_ptr; 1983 EV_P = ev_default_loop_ptr;
1695#endif 1984#endif
1696 1985
1697 ev_default_loop_ptr = 0; 1986 ev_default_loop_ptr = 0;
1698 1987
1699#ifndef _WIN32 1988#if EV_CHILD_ENABLE
1700 ev_ref (EV_A); /* child watcher */ 1989 ev_ref (EV_A); /* child watcher */
1701 ev_signal_stop (EV_A_ &childev); 1990 ev_signal_stop (EV_A_ &childev);
1702#endif 1991#endif
1703 1992
1704 loop_destroy (EV_A); 1993 loop_destroy (EV_A);
… …
1706 1995
1707void 1996void
1708ev_default_fork (void) 1997ev_default_fork (void)
1709{ 1998{
1710#if EV_MULTIPLICITY 1999#if EV_MULTIPLICITY
1711 struct ev_loop *loop = ev_default_loop_ptr; 2000 EV_P = ev_default_loop_ptr;
1712#endif 2001#endif
1713 2002
1714 postfork = 1; /* must be in line with ev_loop_fork */ 2003 postfork = 1; /* must be in line with ev_loop_fork */
1715} 2004}
1716 2005
… …
1720ev_invoke (EV_P_ void *w, int revents) 2009ev_invoke (EV_P_ void *w, int revents)
1721{ 2010{
1722 EV_CB_INVOKE ((W)w, revents); 2011 EV_CB_INVOKE ((W)w, revents);
1723} 2012}
1724 2013
1725void inline_speed 2014unsigned int
1726call_pending (EV_P) 2015ev_pending_count (EV_P)
2016{
2017 int pri;
2018 unsigned int count = 0;
2019
2020 for (pri = NUMPRI; pri--; )
2021 count += pendingcnt [pri];
2022
2023 return count;
2024}
2025
2026void noinline
2027ev_invoke_pending (EV_P)
1727{ 2028{
1728 int pri; 2029 int pri;
1729 2030
1730 for (pri = NUMPRI; pri--; ) 2031 for (pri = NUMPRI; pri--; )
1731 while (pendingcnt [pri]) 2032 while (pendingcnt [pri])
1732 { 2033 {
1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2034 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1734 2035
1735 if (expect_true (p->w))
1736 {
1737 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 2036 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2037 /* ^ this is no longer true, as pending_w could be here */
1738 2038
1739 p->w->pending = 0; 2039 p->w->pending = 0;
1740 EV_CB_INVOKE (p->w, p->events); 2040 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK; 2041 EV_FREQUENT_CHECK;
1742 }
1743 } 2042 }
1744} 2043}
1745 2044
1746#if EV_IDLE_ENABLE 2045#if EV_IDLE_ENABLE
1747void inline_size 2046/* make idle watchers pending. this handles the "call-idle */
2047/* only when higher priorities are idle" logic */
2048inline_size void
1748idle_reify (EV_P) 2049idle_reify (EV_P)
1749{ 2050{
1750 if (expect_false (idleall)) 2051 if (expect_false (idleall))
1751 { 2052 {
1752 int pri; 2053 int pri;
… …
1764 } 2065 }
1765 } 2066 }
1766} 2067}
1767#endif 2068#endif
1768 2069
1769void inline_size 2070/* make timers pending */
2071inline_size void
1770timers_reify (EV_P) 2072timers_reify (EV_P)
1771{ 2073{
1772 EV_FREQUENT_CHECK; 2074 EV_FREQUENT_CHECK;
1773 2075
1774 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2076 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775 { 2077 {
1776 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2078 do
1777
1778 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1779
1780 /* first reschedule or stop timer */
1781 if (w->repeat)
1782 { 2079 {
2080 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2081
2082 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2083
2084 /* first reschedule or stop timer */
2085 if (w->repeat)
2086 {
1783 ev_at (w) += w->repeat; 2087 ev_at (w) += w->repeat;
1784 if (ev_at (w) < mn_now) 2088 if (ev_at (w) < mn_now)
1785 ev_at (w) = mn_now; 2089 ev_at (w) = mn_now;
1786 2090
1787 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2091 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788 2092
1789 ANHE_at_cache (timers [HEAP0]); 2093 ANHE_at_cache (timers [HEAP0]);
1790 downheap (timers, timercnt, HEAP0); 2094 downheap (timers, timercnt, HEAP0);
2095 }
2096 else
2097 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2098
2099 EV_FREQUENT_CHECK;
2100 feed_reverse (EV_A_ (W)w);
1791 } 2101 }
1792 else 2102 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794 2103
1795 EV_FREQUENT_CHECK; 2104 feed_reverse_done (EV_A_ EV_TIMER);
1796 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1797 } 2105 }
1798} 2106}
1799 2107
1800#if EV_PERIODIC_ENABLE 2108#if EV_PERIODIC_ENABLE
1801void inline_size 2109/* make periodics pending */
2110inline_size void
1802periodics_reify (EV_P) 2111periodics_reify (EV_P)
1803{ 2112{
1804 EV_FREQUENT_CHECK; 2113 EV_FREQUENT_CHECK;
1805 2114
1806 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2115 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807 { 2116 {
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2117 int feed_count = 0;
1809 2118
1810 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2119 do
1811
1812 /* first reschedule or stop timer */
1813 if (w->reschedule_cb)
1814 { 2120 {
2121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2122
2123 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2124
2125 /* first reschedule or stop timer */
2126 if (w->reschedule_cb)
2127 {
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2128 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816 2129
1817 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2130 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818 2131
1819 ANHE_at_cache (periodics [HEAP0]); 2132 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0); 2133 downheap (periodics, periodiccnt, HEAP0);
2134 }
2135 else if (w->interval)
2136 {
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2138 /* if next trigger time is not sufficiently in the future, put it there */
2139 /* this might happen because of floating point inexactness */
2140 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2141 {
2142 ev_at (w) += w->interval;
2143
2144 /* if interval is unreasonably low we might still have a time in the past */
2145 /* so correct this. this will make the periodic very inexact, but the user */
2146 /* has effectively asked to get triggered more often than possible */
2147 if (ev_at (w) < ev_rt_now)
2148 ev_at (w) = ev_rt_now;
2149 }
2150
2151 ANHE_at_cache (periodics [HEAP0]);
2152 downheap (periodics, periodiccnt, HEAP0);
2153 }
2154 else
2155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2156
2157 EV_FREQUENT_CHECK;
2158 feed_reverse (EV_A_ (W)w);
1821 } 2159 }
1822 else if (w->interval) 2160 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1823 {
1824 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1825 /* if next trigger time is not sufficiently in the future, put it there */
1826 /* this might happen because of floating point inexactness */
1827 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1828 {
1829 ev_at (w) += w->interval;
1830 2161
1831 /* if interval is unreasonably low we might still have a time in the past */
1832 /* so correct this. this will make the periodic very inexact, but the user */
1833 /* has effectively asked to get triggered more often than possible */
1834 if (ev_at (w) < ev_rt_now)
1835 ev_at (w) = ev_rt_now;
1836 }
1837
1838 ANHE_at_cache (periodics [HEAP0]);
1839 downheap (periodics, periodiccnt, HEAP0);
1840 }
1841 else
1842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1843
1844 EV_FREQUENT_CHECK;
1845 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2162 feed_reverse_done (EV_A_ EV_PERIODIC);
1846 } 2163 }
1847} 2164}
1848 2165
2166/* simply recalculate all periodics */
2167/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1849static void noinline 2168static void noinline
1850periodics_reschedule (EV_P) 2169periodics_reschedule (EV_P)
1851{ 2170{
1852 int i; 2171 int i;
1853 2172
… …
1866 2185
1867 reheap (periodics, periodiccnt); 2186 reheap (periodics, periodiccnt);
1868} 2187}
1869#endif 2188#endif
1870 2189
1871void inline_speed 2190/* adjust all timers by a given offset */
2191static void noinline
2192timers_reschedule (EV_P_ ev_tstamp adjust)
2193{
2194 int i;
2195
2196 for (i = 0; i < timercnt; ++i)
2197 {
2198 ANHE *he = timers + i + HEAP0;
2199 ANHE_w (*he)->at += adjust;
2200 ANHE_at_cache (*he);
2201 }
2202}
2203
2204/* fetch new monotonic and realtime times from the kernel */
2205/* also detect if there was a timejump, and act accordingly */
2206inline_speed void
1872time_update (EV_P_ ev_tstamp max_block) 2207time_update (EV_P_ ev_tstamp max_block)
1873{ 2208{
1874 int i;
1875
1876#if EV_USE_MONOTONIC 2209#if EV_USE_MONOTONIC
1877 if (expect_true (have_monotonic)) 2210 if (expect_true (have_monotonic))
1878 { 2211 {
2212 int i;
1879 ev_tstamp odiff = rtmn_diff; 2213 ev_tstamp odiff = rtmn_diff;
1880 2214
1881 mn_now = get_clock (); 2215 mn_now = get_clock ();
1882 2216
1883 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2217 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1909 ev_rt_now = ev_time (); 2243 ev_rt_now = ev_time ();
1910 mn_now = get_clock (); 2244 mn_now = get_clock ();
1911 now_floor = mn_now; 2245 now_floor = mn_now;
1912 } 2246 }
1913 2247
2248 /* no timer adjustment, as the monotonic clock doesn't jump */
2249 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914# if EV_PERIODIC_ENABLE 2250# if EV_PERIODIC_ENABLE
1915 periodics_reschedule (EV_A); 2251 periodics_reschedule (EV_A);
1916# endif 2252# endif
1917 /* no timer adjustment, as the monotonic clock doesn't jump */
1918 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919 } 2253 }
1920 else 2254 else
1921#endif 2255#endif
1922 { 2256 {
1923 ev_rt_now = ev_time (); 2257 ev_rt_now = ev_time ();
1924 2258
1925 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2259 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926 { 2260 {
2261 /* adjust timers. this is easy, as the offset is the same for all of them */
2262 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927#if EV_PERIODIC_ENABLE 2263#if EV_PERIODIC_ENABLE
1928 periodics_reschedule (EV_A); 2264 periodics_reschedule (EV_A);
1929#endif 2265#endif
1930 /* adjust timers. this is easy, as the offset is the same for all of them */
1931 for (i = 0; i < timercnt; ++i)
1932 {
1933 ANHE *he = timers + i + HEAP0;
1934 ANHE_w (*he)->at += ev_rt_now - mn_now;
1935 ANHE_at_cache (*he);
1936 }
1937 } 2266 }
1938 2267
1939 mn_now = ev_rt_now; 2268 mn_now = ev_rt_now;
1940 } 2269 }
1941} 2270}
1942 2271
1943void 2272void
1944ev_ref (EV_P)
1945{
1946 ++activecnt;
1947}
1948
1949void
1950ev_unref (EV_P)
1951{
1952 --activecnt;
1953}
1954
1955void
1956ev_now_update (EV_P)
1957{
1958 time_update (EV_A_ 1e100);
1959}
1960
1961static int loop_done;
1962
1963void
1964ev_loop (EV_P_ int flags) 2273ev_loop (EV_P_ int flags)
1965{ 2274{
2275#if EV_FEATURE_API
2276 ++loop_depth;
2277#endif
2278
2279 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2280
1966 loop_done = EVUNLOOP_CANCEL; 2281 loop_done = EVUNLOOP_CANCEL;
1967 2282
1968 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969 2284
1970 do 2285 do
1971 { 2286 {
1972#if EV_VERIFY >= 2 2287#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A); 2288 ev_verify (EV_A);
1974#endif 2289#endif
1975 2290
1976#ifndef _WIN32 2291#ifndef _WIN32
1977 if (expect_false (curpid)) /* penalise the forking check even more */ 2292 if (expect_false (curpid)) /* penalise the forking check even more */
1978 if (expect_false (getpid () != curpid)) 2293 if (expect_false (getpid () != curpid))
… …
1986 /* we might have forked, so queue fork handlers */ 2301 /* we might have forked, so queue fork handlers */
1987 if (expect_false (postfork)) 2302 if (expect_false (postfork))
1988 if (forkcnt) 2303 if (forkcnt)
1989 { 2304 {
1990 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2305 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991 call_pending (EV_A); 2306 EV_INVOKE_PENDING;
1992 } 2307 }
1993#endif 2308#endif
1994 2309
2310#if EV_PREPARE_ENABLE
1995 /* queue prepare watchers (and execute them) */ 2311 /* queue prepare watchers (and execute them) */
1996 if (expect_false (preparecnt)) 2312 if (expect_false (preparecnt))
1997 { 2313 {
1998 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2314 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999 call_pending (EV_A); 2315 EV_INVOKE_PENDING;
2000 } 2316 }
2317#endif
2001 2318
2002 if (expect_false (!activecnt)) 2319 if (expect_false (loop_done))
2003 break; 2320 break;
2004 2321
2005 /* we might have forked, so reify kernel state if necessary */ 2322 /* we might have forked, so reify kernel state if necessary */
2006 if (expect_false (postfork)) 2323 if (expect_false (postfork))
2007 loop_fork (EV_A); 2324 loop_fork (EV_A);
… …
2014 ev_tstamp waittime = 0.; 2331 ev_tstamp waittime = 0.;
2015 ev_tstamp sleeptime = 0.; 2332 ev_tstamp sleeptime = 0.;
2016 2333
2017 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2334 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2018 { 2335 {
2336 /* remember old timestamp for io_blocktime calculation */
2337 ev_tstamp prev_mn_now = mn_now;
2338
2019 /* update time to cancel out callback processing overhead */ 2339 /* update time to cancel out callback processing overhead */
2020 time_update (EV_A_ 1e100); 2340 time_update (EV_A_ 1e100);
2021 2341
2022 waittime = MAX_BLOCKTIME; 2342 waittime = MAX_BLOCKTIME;
2023 2343
… …
2033 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2353 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2034 if (waittime > to) waittime = to; 2354 if (waittime > to) waittime = to;
2035 } 2355 }
2036#endif 2356#endif
2037 2357
2358 /* don't let timeouts decrease the waittime below timeout_blocktime */
2038 if (expect_false (waittime < timeout_blocktime)) 2359 if (expect_false (waittime < timeout_blocktime))
2039 waittime = timeout_blocktime; 2360 waittime = timeout_blocktime;
2040 2361
2041 sleeptime = waittime - backend_fudge; 2362 /* extra check because io_blocktime is commonly 0 */
2042
2043 if (expect_true (sleeptime > io_blocktime)) 2363 if (expect_false (io_blocktime))
2044 sleeptime = io_blocktime;
2045
2046 if (sleeptime)
2047 { 2364 {
2365 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2366
2367 if (sleeptime > waittime - backend_fudge)
2368 sleeptime = waittime - backend_fudge;
2369
2370 if (expect_true (sleeptime > 0.))
2371 {
2048 ev_sleep (sleeptime); 2372 ev_sleep (sleeptime);
2049 waittime -= sleeptime; 2373 waittime -= sleeptime;
2374 }
2050 } 2375 }
2051 } 2376 }
2052 2377
2378#if EV_FEATURE_API
2053 ++loop_count; 2379 ++loop_count;
2380#endif
2381 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2054 backend_poll (EV_A_ waittime); 2382 backend_poll (EV_A_ waittime);
2383 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2055 2384
2056 /* update ev_rt_now, do magic */ 2385 /* update ev_rt_now, do magic */
2057 time_update (EV_A_ waittime + sleeptime); 2386 time_update (EV_A_ waittime + sleeptime);
2058 } 2387 }
2059 2388
… …
2066#if EV_IDLE_ENABLE 2395#if EV_IDLE_ENABLE
2067 /* queue idle watchers unless other events are pending */ 2396 /* queue idle watchers unless other events are pending */
2068 idle_reify (EV_A); 2397 idle_reify (EV_A);
2069#endif 2398#endif
2070 2399
2400#if EV_CHECK_ENABLE
2071 /* queue check watchers, to be executed first */ 2401 /* queue check watchers, to be executed first */
2072 if (expect_false (checkcnt)) 2402 if (expect_false (checkcnt))
2073 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2403 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2404#endif
2074 2405
2075 call_pending (EV_A); 2406 EV_INVOKE_PENDING;
2076 } 2407 }
2077 while (expect_true ( 2408 while (expect_true (
2078 activecnt 2409 activecnt
2079 && !loop_done 2410 && !loop_done
2080 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2411 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2081 )); 2412 ));
2082 2413
2083 if (loop_done == EVUNLOOP_ONE) 2414 if (loop_done == EVUNLOOP_ONE)
2084 loop_done = EVUNLOOP_CANCEL; 2415 loop_done = EVUNLOOP_CANCEL;
2416
2417#if EV_FEATURE_API
2418 --loop_depth;
2419#endif
2085} 2420}
2086 2421
2087void 2422void
2088ev_unloop (EV_P_ int how) 2423ev_unloop (EV_P_ int how)
2089{ 2424{
2090 loop_done = how; 2425 loop_done = how;
2091} 2426}
2092 2427
2428void
2429ev_ref (EV_P)
2430{
2431 ++activecnt;
2432}
2433
2434void
2435ev_unref (EV_P)
2436{
2437 --activecnt;
2438}
2439
2440void
2441ev_now_update (EV_P)
2442{
2443 time_update (EV_A_ 1e100);
2444}
2445
2446void
2447ev_suspend (EV_P)
2448{
2449 ev_now_update (EV_A);
2450}
2451
2452void
2453ev_resume (EV_P)
2454{
2455 ev_tstamp mn_prev = mn_now;
2456
2457 ev_now_update (EV_A);
2458 timers_reschedule (EV_A_ mn_now - mn_prev);
2459#if EV_PERIODIC_ENABLE
2460 /* TODO: really do this? */
2461 periodics_reschedule (EV_A);
2462#endif
2463}
2464
2093/*****************************************************************************/ 2465/*****************************************************************************/
2466/* singly-linked list management, used when the expected list length is short */
2094 2467
2095void inline_size 2468inline_size void
2096wlist_add (WL *head, WL elem) 2469wlist_add (WL *head, WL elem)
2097{ 2470{
2098 elem->next = *head; 2471 elem->next = *head;
2099 *head = elem; 2472 *head = elem;
2100} 2473}
2101 2474
2102void inline_size 2475inline_size void
2103wlist_del (WL *head, WL elem) 2476wlist_del (WL *head, WL elem)
2104{ 2477{
2105 while (*head) 2478 while (*head)
2106 { 2479 {
2107 if (*head == elem) 2480 if (expect_true (*head == elem))
2108 { 2481 {
2109 *head = elem->next; 2482 *head = elem->next;
2110 return; 2483 break;
2111 } 2484 }
2112 2485
2113 head = &(*head)->next; 2486 head = &(*head)->next;
2114 } 2487 }
2115} 2488}
2116 2489
2117void inline_speed 2490/* internal, faster, version of ev_clear_pending */
2491inline_speed void
2118clear_pending (EV_P_ W w) 2492clear_pending (EV_P_ W w)
2119{ 2493{
2120 if (w->pending) 2494 if (w->pending)
2121 { 2495 {
2122 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2496 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2123 w->pending = 0; 2497 w->pending = 0;
2124 } 2498 }
2125} 2499}
2126 2500
2127int 2501int
… …
2131 int pending = w_->pending; 2505 int pending = w_->pending;
2132 2506
2133 if (expect_true (pending)) 2507 if (expect_true (pending))
2134 { 2508 {
2135 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2509 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2510 p->w = (W)&pending_w;
2136 w_->pending = 0; 2511 w_->pending = 0;
2137 p->w = 0;
2138 return p->events; 2512 return p->events;
2139 } 2513 }
2140 else 2514 else
2141 return 0; 2515 return 0;
2142} 2516}
2143 2517
2144void inline_size 2518inline_size void
2145pri_adjust (EV_P_ W w) 2519pri_adjust (EV_P_ W w)
2146{ 2520{
2147 int pri = w->priority; 2521 int pri = ev_priority (w);
2148 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2522 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2149 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2523 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2150 w->priority = pri; 2524 ev_set_priority (w, pri);
2151} 2525}
2152 2526
2153void inline_speed 2527inline_speed void
2154ev_start (EV_P_ W w, int active) 2528ev_start (EV_P_ W w, int active)
2155{ 2529{
2156 pri_adjust (EV_A_ w); 2530 pri_adjust (EV_A_ w);
2157 w->active = active; 2531 w->active = active;
2158 ev_ref (EV_A); 2532 ev_ref (EV_A);
2159} 2533}
2160 2534
2161void inline_size 2535inline_size void
2162ev_stop (EV_P_ W w) 2536ev_stop (EV_P_ W w)
2163{ 2537{
2164 ev_unref (EV_A); 2538 ev_unref (EV_A);
2165 w->active = 0; 2539 w->active = 0;
2166} 2540}
… …
2174 2548
2175 if (expect_false (ev_is_active (w))) 2549 if (expect_false (ev_is_active (w)))
2176 return; 2550 return;
2177 2551
2178 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2552 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2179 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2553 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180 2554
2181 EV_FREQUENT_CHECK; 2555 EV_FREQUENT_CHECK;
2182 2556
2183 ev_start (EV_A_ (W)w, 1); 2557 ev_start (EV_A_ (W)w, 1);
2184 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2558 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2185 wlist_add (&anfds[fd].head, (WL)w); 2559 wlist_add (&anfds[fd].head, (WL)w);
2186 2560
2187 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2561 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2188 w->events &= ~EV_IOFDSET; 2562 w->events &= ~EV__IOFDSET;
2189 2563
2190 EV_FREQUENT_CHECK; 2564 EV_FREQUENT_CHECK;
2191} 2565}
2192 2566
2193void noinline 2567void noinline
… …
2254 timers [active] = timers [timercnt + HEAP0]; 2628 timers [active] = timers [timercnt + HEAP0];
2255 adjustheap (timers, timercnt, active); 2629 adjustheap (timers, timercnt, active);
2256 } 2630 }
2257 } 2631 }
2258 2632
2259 EV_FREQUENT_CHECK;
2260
2261 ev_at (w) -= mn_now; 2633 ev_at (w) -= mn_now;
2262 2634
2263 ev_stop (EV_A_ (W)w); 2635 ev_stop (EV_A_ (W)w);
2636
2637 EV_FREQUENT_CHECK;
2264} 2638}
2265 2639
2266void noinline 2640void noinline
2267ev_timer_again (EV_P_ ev_timer *w) 2641ev_timer_again (EV_P_ ev_timer *w)
2268{ 2642{
… …
2286 } 2660 }
2287 2661
2288 EV_FREQUENT_CHECK; 2662 EV_FREQUENT_CHECK;
2289} 2663}
2290 2664
2665ev_tstamp
2666ev_timer_remaining (EV_P_ ev_timer *w)
2667{
2668 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2669}
2670
2291#if EV_PERIODIC_ENABLE 2671#if EV_PERIODIC_ENABLE
2292void noinline 2672void noinline
2293ev_periodic_start (EV_P_ ev_periodic *w) 2673ev_periodic_start (EV_P_ ev_periodic *w)
2294{ 2674{
2295 if (expect_false (ev_is_active (w))) 2675 if (expect_false (ev_is_active (w)))
… …
2341 periodics [active] = periodics [periodiccnt + HEAP0]; 2721 periodics [active] = periodics [periodiccnt + HEAP0];
2342 adjustheap (periodics, periodiccnt, active); 2722 adjustheap (periodics, periodiccnt, active);
2343 } 2723 }
2344 } 2724 }
2345 2725
2346 EV_FREQUENT_CHECK;
2347
2348 ev_stop (EV_A_ (W)w); 2726 ev_stop (EV_A_ (W)w);
2727
2728 EV_FREQUENT_CHECK;
2349} 2729}
2350 2730
2351void noinline 2731void noinline
2352ev_periodic_again (EV_P_ ev_periodic *w) 2732ev_periodic_again (EV_P_ ev_periodic *w)
2353{ 2733{
… …
2359 2739
2360#ifndef SA_RESTART 2740#ifndef SA_RESTART
2361# define SA_RESTART 0 2741# define SA_RESTART 0
2362#endif 2742#endif
2363 2743
2744#if EV_SIGNAL_ENABLE
2745
2364void noinline 2746void noinline
2365ev_signal_start (EV_P_ ev_signal *w) 2747ev_signal_start (EV_P_ ev_signal *w)
2366{ 2748{
2367#if EV_MULTIPLICITY
2368 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2369#endif
2370 if (expect_false (ev_is_active (w))) 2749 if (expect_false (ev_is_active (w)))
2371 return; 2750 return;
2372 2751
2373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2752 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2374 2753
2375 evpipe_init (EV_A); 2754#if EV_MULTIPLICITY
2755 assert (("libev: a signal must not be attached to two different loops",
2756 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2376 2757
2377 EV_FREQUENT_CHECK; 2758 signals [w->signum - 1].loop = EV_A;
2759#endif
2378 2760
2761 EV_FREQUENT_CHECK;
2762
2763#if EV_USE_SIGNALFD
2764 if (sigfd == -2)
2379 { 2765 {
2380#ifndef _WIN32 2766 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2381 sigset_t full, prev; 2767 if (sigfd < 0 && errno == EINVAL)
2382 sigfillset (&full); 2768 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2383 sigprocmask (SIG_SETMASK, &full, &prev);
2384#endif
2385 2769
2386 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2770 if (sigfd >= 0)
2771 {
2772 fd_intern (sigfd); /* doing it twice will not hurt */
2387 2773
2388#ifndef _WIN32 2774 sigemptyset (&sigfd_set);
2389 sigprocmask (SIG_SETMASK, &prev, 0); 2775
2390#endif 2776 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2777 ev_set_priority (&sigfd_w, EV_MAXPRI);
2778 ev_io_start (EV_A_ &sigfd_w);
2779 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2780 }
2391 } 2781 }
2782
2783 if (sigfd >= 0)
2784 {
2785 /* TODO: check .head */
2786 sigaddset (&sigfd_set, w->signum);
2787 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2788
2789 signalfd (sigfd, &sigfd_set, 0);
2790 }
2791#endif
2392 2792
2393 ev_start (EV_A_ (W)w, 1); 2793 ev_start (EV_A_ (W)w, 1);
2394 wlist_add (&signals [w->signum - 1].head, (WL)w); 2794 wlist_add (&signals [w->signum - 1].head, (WL)w);
2395 2795
2396 if (!((WL)w)->next) 2796 if (!((WL)w)->next)
2797# if EV_USE_SIGNALFD
2798 if (sigfd < 0) /*TODO*/
2799# endif
2397 { 2800 {
2398#if _WIN32 2801# ifdef _WIN32
2802 evpipe_init (EV_A);
2803
2399 signal (w->signum, ev_sighandler); 2804 signal (w->signum, ev_sighandler);
2400#else 2805# else
2401 struct sigaction sa; 2806 struct sigaction sa;
2807
2808 evpipe_init (EV_A);
2809
2402 sa.sa_handler = ev_sighandler; 2810 sa.sa_handler = ev_sighandler;
2403 sigfillset (&sa.sa_mask); 2811 sigfillset (&sa.sa_mask);
2404 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2812 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2405 sigaction (w->signum, &sa, 0); 2813 sigaction (w->signum, &sa, 0);
2814
2815 sigemptyset (&sa.sa_mask);
2816 sigaddset (&sa.sa_mask, w->signum);
2817 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2406#endif 2818#endif
2407 } 2819 }
2408 2820
2409 EV_FREQUENT_CHECK; 2821 EV_FREQUENT_CHECK;
2410} 2822}
2411 2823
2412void noinline 2824void noinline
… …
2420 2832
2421 wlist_del (&signals [w->signum - 1].head, (WL)w); 2833 wlist_del (&signals [w->signum - 1].head, (WL)w);
2422 ev_stop (EV_A_ (W)w); 2834 ev_stop (EV_A_ (W)w);
2423 2835
2424 if (!signals [w->signum - 1].head) 2836 if (!signals [w->signum - 1].head)
2837 {
2838#if EV_MULTIPLICITY
2839 signals [w->signum - 1].loop = 0; /* unattach from signal */
2840#endif
2841#if EV_USE_SIGNALFD
2842 if (sigfd >= 0)
2843 {
2844 sigset_t ss;
2845
2846 sigemptyset (&ss);
2847 sigaddset (&ss, w->signum);
2848 sigdelset (&sigfd_set, w->signum);
2849
2850 signalfd (sigfd, &sigfd_set, 0);
2851 sigprocmask (SIG_UNBLOCK, &ss, 0);
2852 }
2853 else
2854#endif
2425 signal (w->signum, SIG_DFL); 2855 signal (w->signum, SIG_DFL);
2856 }
2426 2857
2427 EV_FREQUENT_CHECK; 2858 EV_FREQUENT_CHECK;
2428} 2859}
2860
2861#endif
2862
2863#if EV_CHILD_ENABLE
2429 2864
2430void 2865void
2431ev_child_start (EV_P_ ev_child *w) 2866ev_child_start (EV_P_ ev_child *w)
2432{ 2867{
2433#if EV_MULTIPLICITY 2868#if EV_MULTIPLICITY
… …
2437 return; 2872 return;
2438 2873
2439 EV_FREQUENT_CHECK; 2874 EV_FREQUENT_CHECK;
2440 2875
2441 ev_start (EV_A_ (W)w, 1); 2876 ev_start (EV_A_ (W)w, 1);
2442 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2877 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2443 2878
2444 EV_FREQUENT_CHECK; 2879 EV_FREQUENT_CHECK;
2445} 2880}
2446 2881
2447void 2882void
… …
2451 if (expect_false (!ev_is_active (w))) 2886 if (expect_false (!ev_is_active (w)))
2452 return; 2887 return;
2453 2888
2454 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2455 2890
2456 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2891 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2457 ev_stop (EV_A_ (W)w); 2892 ev_stop (EV_A_ (W)w);
2458 2893
2459 EV_FREQUENT_CHECK; 2894 EV_FREQUENT_CHECK;
2460} 2895}
2896
2897#endif
2461 2898
2462#if EV_STAT_ENABLE 2899#if EV_STAT_ENABLE
2463 2900
2464# ifdef _WIN32 2901# ifdef _WIN32
2465# undef lstat 2902# undef lstat
… …
2471#define MIN_STAT_INTERVAL 0.1074891 2908#define MIN_STAT_INTERVAL 0.1074891
2472 2909
2473static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2910static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2474 2911
2475#if EV_USE_INOTIFY 2912#if EV_USE_INOTIFY
2476# define EV_INOTIFY_BUFSIZE 8192 2913
2914/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2915# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2477 2916
2478static void noinline 2917static void noinline
2479infy_add (EV_P_ ev_stat *w) 2918infy_add (EV_P_ ev_stat *w)
2480{ 2919{
2481 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2920 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2482 2921
2483 if (w->wd < 0) 2922 if (w->wd >= 0)
2923 {
2924 struct statfs sfs;
2925
2926 /* now local changes will be tracked by inotify, but remote changes won't */
2927 /* unless the filesystem is known to be local, we therefore still poll */
2928 /* also do poll on <2.6.25, but with normal frequency */
2929
2930 if (!fs_2625)
2931 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2932 else if (!statfs (w->path, &sfs)
2933 && (sfs.f_type == 0x1373 /* devfs */
2934 || sfs.f_type == 0xEF53 /* ext2/3 */
2935 || sfs.f_type == 0x3153464a /* jfs */
2936 || sfs.f_type == 0x52654973 /* reiser3 */
2937 || sfs.f_type == 0x01021994 /* tempfs */
2938 || sfs.f_type == 0x58465342 /* xfs */))
2939 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2940 else
2941 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2484 { 2942 }
2943 else
2944 {
2945 /* can't use inotify, continue to stat */
2485 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2946 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2486 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2487 2947
2488 /* monitor some parent directory for speedup hints */ 2948 /* if path is not there, monitor some parent directory for speedup hints */
2489 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2949 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2490 /* but an efficiency issue only */ 2950 /* but an efficiency issue only */
2491 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2951 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2492 { 2952 {
2493 char path [4096]; 2953 char path [4096];
… …
2509 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2969 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2510 } 2970 }
2511 } 2971 }
2512 2972
2513 if (w->wd >= 0) 2973 if (w->wd >= 0)
2514 {
2515 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2974 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2516 2975
2517 /* now local changes will be tracked by inotify, but remote changes won't */ 2976 /* now re-arm timer, if required */
2518 /* unless the filesystem it known to be local, we therefore still poll */ 2977 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2519 /* also do poll on <2.6.25, but with normal frequency */
2520 struct statfs sfs;
2521
2522 if (fs_2625 && !statfs (w->path, &sfs))
2523 if (sfs.f_type == 0x1373 /* devfs */
2524 || sfs.f_type == 0xEF53 /* ext2/3 */
2525 || sfs.f_type == 0x3153464a /* jfs */
2526 || sfs.f_type == 0x52654973 /* reiser3 */
2527 || sfs.f_type == 0x01021994 /* tempfs */
2528 || sfs.f_type == 0x58465342 /* xfs */)
2529 return;
2530
2531 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2532 ev_timer_again (EV_A_ &w->timer); 2978 ev_timer_again (EV_A_ &w->timer);
2533 } 2979 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2534} 2980}
2535 2981
2536static void noinline 2982static void noinline
2537infy_del (EV_P_ ev_stat *w) 2983infy_del (EV_P_ ev_stat *w)
2538{ 2984{
… …
2541 2987
2542 if (wd < 0) 2988 if (wd < 0)
2543 return; 2989 return;
2544 2990
2545 w->wd = -2; 2991 w->wd = -2;
2546 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 2992 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2547 wlist_del (&fs_hash [slot].head, (WL)w); 2993 wlist_del (&fs_hash [slot].head, (WL)w);
2548 2994
2549 /* remove this watcher, if others are watching it, they will rearm */ 2995 /* remove this watcher, if others are watching it, they will rearm */
2550 inotify_rm_watch (fs_fd, wd); 2996 inotify_rm_watch (fs_fd, wd);
2551} 2997}
… …
2553static void noinline 2999static void noinline
2554infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3000infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2555{ 3001{
2556 if (slot < 0) 3002 if (slot < 0)
2557 /* overflow, need to check for all hash slots */ 3003 /* overflow, need to check for all hash slots */
2558 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3004 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2559 infy_wd (EV_A_ slot, wd, ev); 3005 infy_wd (EV_A_ slot, wd, ev);
2560 else 3006 else
2561 { 3007 {
2562 WL w_; 3008 WL w_;
2563 3009
2564 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3010 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2565 { 3011 {
2566 ev_stat *w = (ev_stat *)w_; 3012 ev_stat *w = (ev_stat *)w_;
2567 w_ = w_->next; /* lets us remove this watcher and all before it */ 3013 w_ = w_->next; /* lets us remove this watcher and all before it */
2568 3014
2569 if (w->wd == wd || wd == -1) 3015 if (w->wd == wd || wd == -1)
2570 { 3016 {
2571 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3017 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2572 { 3018 {
2573 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3019 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2574 w->wd = -1; 3020 w->wd = -1;
2575 infy_add (EV_A_ w); /* re-add, no matter what */ 3021 infy_add (EV_A_ w); /* re-add, no matter what */
2576 } 3022 }
2577 3023
2578 stat_timer_cb (EV_A_ &w->timer, 0); 3024 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2583 3029
2584static void 3030static void
2585infy_cb (EV_P_ ev_io *w, int revents) 3031infy_cb (EV_P_ ev_io *w, int revents)
2586{ 3032{
2587 char buf [EV_INOTIFY_BUFSIZE]; 3033 char buf [EV_INOTIFY_BUFSIZE];
2588 struct inotify_event *ev = (struct inotify_event *)buf;
2589 int ofs; 3034 int ofs;
2590 int len = read (fs_fd, buf, sizeof (buf)); 3035 int len = read (fs_fd, buf, sizeof (buf));
2591 3036
2592 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3037 for (ofs = 0; ofs < len; )
3038 {
3039 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2593 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3040 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3041 ofs += sizeof (struct inotify_event) + ev->len;
3042 }
2594} 3043}
2595 3044
2596void inline_size 3045inline_size unsigned int
3046ev_linux_version (void)
3047{
3048 struct utsname buf;
3049 unsigned int v;
3050 int i;
3051 char *p = buf.release;
3052
3053 if (uname (&buf))
3054 return 0;
3055
3056 for (i = 3+1; --i; )
3057 {
3058 unsigned int c = 0;
3059
3060 for (;;)
3061 {
3062 if (*p >= '0' && *p <= '9')
3063 c = c * 10 + *p++ - '0';
3064 else
3065 {
3066 p += *p == '.';
3067 break;
3068 }
3069 }
3070
3071 v = (v << 8) | c;
3072 }
3073
3074 return v;
3075}
3076
3077inline_size void
2597check_2625 (EV_P) 3078ev_check_2625 (EV_P)
2598{ 3079{
2599 /* kernels < 2.6.25 are borked 3080 /* kernels < 2.6.25 are borked
2600 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3081 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601 */ 3082 */
2602 struct utsname buf; 3083 if (ev_linux_version () < 0x020619)
2603 int major, minor, micro;
2604
2605 if (uname (&buf))
2606 return; 3084 return;
2607 3085
2608 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2609 return;
2610
2611 if (major < 2
2612 || (major == 2 && minor < 6)
2613 || (major == 2 && minor == 6 && micro < 25))
2614 return;
2615
2616 fs_2625 = 1; 3086 fs_2625 = 1;
2617} 3087}
2618 3088
2619void inline_size 3089inline_size int
3090infy_newfd (void)
3091{
3092#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3093 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3094 if (fd >= 0)
3095 return fd;
3096#endif
3097 return inotify_init ();
3098}
3099
3100inline_size void
2620infy_init (EV_P) 3101infy_init (EV_P)
2621{ 3102{
2622 if (fs_fd != -2) 3103 if (fs_fd != -2)
2623 return; 3104 return;
2624 3105
2625 fs_fd = -1; 3106 fs_fd = -1;
2626 3107
2627 check_2625 (EV_A); 3108 ev_check_2625 (EV_A);
2628 3109
2629 fs_fd = inotify_init (); 3110 fs_fd = infy_newfd ();
2630 3111
2631 if (fs_fd >= 0) 3112 if (fs_fd >= 0)
2632 { 3113 {
3114 fd_intern (fs_fd);
2633 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3115 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2634 ev_set_priority (&fs_w, EV_MAXPRI); 3116 ev_set_priority (&fs_w, EV_MAXPRI);
2635 ev_io_start (EV_A_ &fs_w); 3117 ev_io_start (EV_A_ &fs_w);
3118 ev_unref (EV_A);
2636 } 3119 }
2637} 3120}
2638 3121
2639void inline_size 3122inline_size void
2640infy_fork (EV_P) 3123infy_fork (EV_P)
2641{ 3124{
2642 int slot; 3125 int slot;
2643 3126
2644 if (fs_fd < 0) 3127 if (fs_fd < 0)
2645 return; 3128 return;
2646 3129
3130 ev_ref (EV_A);
3131 ev_io_stop (EV_A_ &fs_w);
2647 close (fs_fd); 3132 close (fs_fd);
2648 fs_fd = inotify_init (); 3133 fs_fd = infy_newfd ();
2649 3134
3135 if (fs_fd >= 0)
3136 {
3137 fd_intern (fs_fd);
3138 ev_io_set (&fs_w, fs_fd, EV_READ);
3139 ev_io_start (EV_A_ &fs_w);
3140 ev_unref (EV_A);
3141 }
3142
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3143 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 { 3144 {
2652 WL w_ = fs_hash [slot].head; 3145 WL w_ = fs_hash [slot].head;
2653 fs_hash [slot].head = 0; 3146 fs_hash [slot].head = 0;
2654 3147
2655 while (w_) 3148 while (w_)
… …
2660 w->wd = -1; 3153 w->wd = -1;
2661 3154
2662 if (fs_fd >= 0) 3155 if (fs_fd >= 0)
2663 infy_add (EV_A_ w); /* re-add, no matter what */ 3156 infy_add (EV_A_ w); /* re-add, no matter what */
2664 else 3157 else
3158 {
3159 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3160 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2665 ev_timer_again (EV_A_ &w->timer); 3161 ev_timer_again (EV_A_ &w->timer);
3162 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3163 }
2666 } 3164 }
2667 } 3165 }
2668} 3166}
2669 3167
2670#endif 3168#endif
… …
2687static void noinline 3185static void noinline
2688stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3186stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2689{ 3187{
2690 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3188 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2691 3189
2692 /* we copy this here each the time so that */ 3190 ev_statdata prev = w->attr;
2693 /* prev has the old value when the callback gets invoked */
2694 w->prev = w->attr;
2695 ev_stat_stat (EV_A_ w); 3191 ev_stat_stat (EV_A_ w);
2696 3192
2697 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3193 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2698 if ( 3194 if (
2699 w->prev.st_dev != w->attr.st_dev 3195 prev.st_dev != w->attr.st_dev
2700 || w->prev.st_ino != w->attr.st_ino 3196 || prev.st_ino != w->attr.st_ino
2701 || w->prev.st_mode != w->attr.st_mode 3197 || prev.st_mode != w->attr.st_mode
2702 || w->prev.st_nlink != w->attr.st_nlink 3198 || prev.st_nlink != w->attr.st_nlink
2703 || w->prev.st_uid != w->attr.st_uid 3199 || prev.st_uid != w->attr.st_uid
2704 || w->prev.st_gid != w->attr.st_gid 3200 || prev.st_gid != w->attr.st_gid
2705 || w->prev.st_rdev != w->attr.st_rdev 3201 || prev.st_rdev != w->attr.st_rdev
2706 || w->prev.st_size != w->attr.st_size 3202 || prev.st_size != w->attr.st_size
2707 || w->prev.st_atime != w->attr.st_atime 3203 || prev.st_atime != w->attr.st_atime
2708 || w->prev.st_mtime != w->attr.st_mtime 3204 || prev.st_mtime != w->attr.st_mtime
2709 || w->prev.st_ctime != w->attr.st_ctime 3205 || prev.st_ctime != w->attr.st_ctime
2710 ) { 3206 ) {
3207 /* we only update w->prev on actual differences */
3208 /* in case we test more often than invoke the callback, */
3209 /* to ensure that prev is always different to attr */
3210 w->prev = prev;
3211
2711 #if EV_USE_INOTIFY 3212 #if EV_USE_INOTIFY
2712 if (fs_fd >= 0) 3213 if (fs_fd >= 0)
2713 { 3214 {
2714 infy_del (EV_A_ w); 3215 infy_del (EV_A_ w);
2715 infy_add (EV_A_ w); 3216 infy_add (EV_A_ w);
… …
2740 3241
2741 if (fs_fd >= 0) 3242 if (fs_fd >= 0)
2742 infy_add (EV_A_ w); 3243 infy_add (EV_A_ w);
2743 else 3244 else
2744#endif 3245#endif
3246 {
2745 ev_timer_again (EV_A_ &w->timer); 3247 ev_timer_again (EV_A_ &w->timer);
3248 ev_unref (EV_A);
3249 }
2746 3250
2747 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2748 3252
2749 EV_FREQUENT_CHECK; 3253 EV_FREQUENT_CHECK;
2750} 3254}
… …
2759 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2760 3264
2761#if EV_USE_INOTIFY 3265#if EV_USE_INOTIFY
2762 infy_del (EV_A_ w); 3266 infy_del (EV_A_ w);
2763#endif 3267#endif
3268
3269 if (ev_is_active (&w->timer))
3270 {
3271 ev_ref (EV_A);
2764 ev_timer_stop (EV_A_ &w->timer); 3272 ev_timer_stop (EV_A_ &w->timer);
3273 }
2765 3274
2766 ev_stop (EV_A_ (W)w); 3275 ev_stop (EV_A_ (W)w);
2767 3276
2768 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2769} 3278}
… …
2814 3323
2815 EV_FREQUENT_CHECK; 3324 EV_FREQUENT_CHECK;
2816} 3325}
2817#endif 3326#endif
2818 3327
3328#if EV_PREPARE_ENABLE
2819void 3329void
2820ev_prepare_start (EV_P_ ev_prepare *w) 3330ev_prepare_start (EV_P_ ev_prepare *w)
2821{ 3331{
2822 if (expect_false (ev_is_active (w))) 3332 if (expect_false (ev_is_active (w)))
2823 return; 3333 return;
… …
2849 3359
2850 ev_stop (EV_A_ (W)w); 3360 ev_stop (EV_A_ (W)w);
2851 3361
2852 EV_FREQUENT_CHECK; 3362 EV_FREQUENT_CHECK;
2853} 3363}
3364#endif
2854 3365
3366#if EV_CHECK_ENABLE
2855void 3367void
2856ev_check_start (EV_P_ ev_check *w) 3368ev_check_start (EV_P_ ev_check *w)
2857{ 3369{
2858 if (expect_false (ev_is_active (w))) 3370 if (expect_false (ev_is_active (w)))
2859 return; 3371 return;
… …
2885 3397
2886 ev_stop (EV_A_ (W)w); 3398 ev_stop (EV_A_ (W)w);
2887 3399
2888 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
2889} 3401}
3402#endif
2890 3403
2891#if EV_EMBED_ENABLE 3404#if EV_EMBED_ENABLE
2892void noinline 3405void noinline
2893ev_embed_sweep (EV_P_ ev_embed *w) 3406ev_embed_sweep (EV_P_ ev_embed *w)
2894{ 3407{
… …
2910embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911{ 3424{
2912 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3425 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913 3426
2914 { 3427 {
2915 struct ev_loop *loop = w->other; 3428 EV_P = w->other;
2916 3429
2917 while (fdchangecnt) 3430 while (fdchangecnt)
2918 { 3431 {
2919 fd_reify (EV_A); 3432 fd_reify (EV_A);
2920 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3433 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2928 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3441 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929 3442
2930 ev_embed_stop (EV_A_ w); 3443 ev_embed_stop (EV_A_ w);
2931 3444
2932 { 3445 {
2933 struct ev_loop *loop = w->other; 3446 EV_P = w->other;
2934 3447
2935 ev_loop_fork (EV_A); 3448 ev_loop_fork (EV_A);
2936 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3449 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2937 } 3450 }
2938 3451
… …
2952{ 3465{
2953 if (expect_false (ev_is_active (w))) 3466 if (expect_false (ev_is_active (w)))
2954 return; 3467 return;
2955 3468
2956 { 3469 {
2957 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
2958 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3471 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2959 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3472 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2960 } 3473 }
2961 3474
2962 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
… …
2989 3502
2990 ev_io_stop (EV_A_ &w->io); 3503 ev_io_stop (EV_A_ &w->io);
2991 ev_prepare_stop (EV_A_ &w->prepare); 3504 ev_prepare_stop (EV_A_ &w->prepare);
2992 ev_fork_stop (EV_A_ &w->fork); 3505 ev_fork_stop (EV_A_ &w->fork);
2993 3506
3507 ev_stop (EV_A_ (W)w);
3508
2994 EV_FREQUENT_CHECK; 3509 EV_FREQUENT_CHECK;
2995} 3510}
2996#endif 3511#endif
2997 3512
2998#if EV_FORK_ENABLE 3513#if EV_FORK_ENABLE
… …
3074 3589
3075void 3590void
3076ev_async_send (EV_P_ ev_async *w) 3591ev_async_send (EV_P_ ev_async *w)
3077{ 3592{
3078 w->sent = 1; 3593 w->sent = 1;
3079 evpipe_write (EV_A_ &gotasync); 3594 evpipe_write (EV_A_ &async_pending);
3080} 3595}
3081#endif 3596#endif
3082 3597
3083/*****************************************************************************/ 3598/*****************************************************************************/
3084 3599
… …
3124{ 3639{
3125 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3640 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3126 3641
3127 if (expect_false (!once)) 3642 if (expect_false (!once))
3128 { 3643 {
3129 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3644 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3130 return; 3645 return;
3131 } 3646 }
3132 3647
3133 once->cb = cb; 3648 once->cb = cb;
3134 once->arg = arg; 3649 once->arg = arg;
… …
3146 ev_timer_set (&once->to, timeout, 0.); 3661 ev_timer_set (&once->to, timeout, 0.);
3147 ev_timer_start (EV_A_ &once->to); 3662 ev_timer_start (EV_A_ &once->to);
3148 } 3663 }
3149} 3664}
3150 3665
3666/*****************************************************************************/
3667
3668#if EV_WALK_ENABLE
3669void
3670ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3671{
3672 int i, j;
3673 ev_watcher_list *wl, *wn;
3674
3675 if (types & (EV_IO | EV_EMBED))
3676 for (i = 0; i < anfdmax; ++i)
3677 for (wl = anfds [i].head; wl; )
3678 {
3679 wn = wl->next;
3680
3681#if EV_EMBED_ENABLE
3682 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3683 {
3684 if (types & EV_EMBED)
3685 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3686 }
3687 else
3688#endif
3689#if EV_USE_INOTIFY
3690 if (ev_cb ((ev_io *)wl) == infy_cb)
3691 ;
3692 else
3693#endif
3694 if ((ev_io *)wl != &pipe_w)
3695 if (types & EV_IO)
3696 cb (EV_A_ EV_IO, wl);
3697
3698 wl = wn;
3699 }
3700
3701 if (types & (EV_TIMER | EV_STAT))
3702 for (i = timercnt + HEAP0; i-- > HEAP0; )
3703#if EV_STAT_ENABLE
3704 /*TODO: timer is not always active*/
3705 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3706 {
3707 if (types & EV_STAT)
3708 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3709 }
3710 else
3711#endif
3712 if (types & EV_TIMER)
3713 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3714
3715#if EV_PERIODIC_ENABLE
3716 if (types & EV_PERIODIC)
3717 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3718 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3719#endif
3720
3721#if EV_IDLE_ENABLE
3722 if (types & EV_IDLE)
3723 for (j = NUMPRI; i--; )
3724 for (i = idlecnt [j]; i--; )
3725 cb (EV_A_ EV_IDLE, idles [j][i]);
3726#endif
3727
3728#if EV_FORK_ENABLE
3729 if (types & EV_FORK)
3730 for (i = forkcnt; i--; )
3731 if (ev_cb (forks [i]) != embed_fork_cb)
3732 cb (EV_A_ EV_FORK, forks [i]);
3733#endif
3734
3735#if EV_ASYNC_ENABLE
3736 if (types & EV_ASYNC)
3737 for (i = asynccnt; i--; )
3738 cb (EV_A_ EV_ASYNC, asyncs [i]);
3739#endif
3740
3741#if EV_PREPARE_ENABLE
3742 if (types & EV_PREPARE)
3743 for (i = preparecnt; i--; )
3744# if EV_EMBED_ENABLE
3745 if (ev_cb (prepares [i]) != embed_prepare_cb)
3746# endif
3747 cb (EV_A_ EV_PREPARE, prepares [i]);
3748#endif
3749
3750#if EV_CHECK_ENABLE
3751 if (types & EV_CHECK)
3752 for (i = checkcnt; i--; )
3753 cb (EV_A_ EV_CHECK, checks [i]);
3754#endif
3755
3756#if EV_SIGNAL_ENABLE
3757 if (types & EV_SIGNAL)
3758 for (i = 0; i < EV_NSIG - 1; ++i)
3759 for (wl = signals [i].head; wl; )
3760 {
3761 wn = wl->next;
3762 cb (EV_A_ EV_SIGNAL, wl);
3763 wl = wn;
3764 }
3765#endif
3766
3767#if EV_CHILD_ENABLE
3768 if (types & EV_CHILD)
3769 for (i = (EV_PID_HASHSIZE); i--; )
3770 for (wl = childs [i]; wl; )
3771 {
3772 wn = wl->next;
3773 cb (EV_A_ EV_CHILD, wl);
3774 wl = wn;
3775 }
3776#endif
3777/* EV_STAT 0x00001000 /* stat data changed */
3778/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3779}
3780#endif
3781
3151#if EV_MULTIPLICITY 3782#if EV_MULTIPLICITY
3152 #include "ev_wrap.h" 3783 #include "ev_wrap.h"
3153#endif 3784#endif
3154 3785
3155#ifdef __cplusplus 3786#ifdef __cplusplus

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