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Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.73 by root, Tue Nov 6 16:27:10 2007 UTC

… …
54 54
55#endif 55#endif
56 56
57#include <math.h> 57#include <math.h>
58#include <stdlib.h> 58#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 59#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 60#include <stddef.h>
63 61
64#include <stdio.h> 62#include <stdio.h>
65 63
66#include <assert.h> 64#include <assert.h>
67#include <errno.h> 65#include <errno.h>
68#include <sys/types.h> 66#include <sys/types.h>
67#include <time.h>
68
69#include <signal.h>
70
69#ifndef WIN32 71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
70# include <sys/wait.h> 74# include <sys/wait.h>
71#endif 75#endif
72#include <sys/time.h>
73#include <time.h>
74
75/**/ 76/**/
76 77
77#ifndef EV_USE_MONOTONIC 78#ifndef EV_USE_MONOTONIC
78# define EV_USE_MONOTONIC 1 79# define EV_USE_MONOTONIC 1
79#endif 80#endif
… …
94# define EV_USE_KQUEUE 0 95# define EV_USE_KQUEUE 0
95#endif 96#endif
96 97
97#ifndef EV_USE_WIN32 98#ifndef EV_USE_WIN32
98# ifdef WIN32 99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
99# define EV_USE_WIN32 1 102# define EV_USE_SELECT 1
100# else 103# else
101# define EV_USE_WIN32 0 104# define EV_USE_WIN32 0
102# endif 105# endif
103#endif 106#endif
104 107
… …
145typedef struct ev_watcher_list *WL; 148typedef struct ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 149typedef struct ev_watcher_time *WT;
147 150
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 152
150#if WIN32 153#include "ev_win32.c"
151/* note: the comment below could not be substantiated, but what would I care */
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif
155 154
156/*****************************************************************************/ 155/*****************************************************************************/
157 156
158static void (*syserr_cb)(void); 157static void (*syserr_cb)(const char *msg);
159 158
160void ev_set_syserr_cb (void (*cb)(void)) 159void ev_set_syserr_cb (void (*cb)(const char *msg))
161{ 160{
162 syserr_cb = cb; 161 syserr_cb = cb;
163} 162}
164 163
165static void 164static void
166syserr (void) 165syserr (const char *msg)
167{ 166{
167 if (!msg)
168 msg = "(libev) system error";
169
168 if (syserr_cb) 170 if (syserr_cb)
169 syserr_cb (); 171 syserr_cb (msg);
170 else 172 else
171 { 173 {
172 perror ("libev"); 174 perror (msg);
173 abort (); 175 abort ();
174 } 176 }
175} 177}
176 178
177static void *(*alloc)(void *ptr, long size); 179static void *(*alloc)(void *ptr, long size);
… …
291 stem ## max = array_roundsize (stem ## cnt >> 1); \ 293 stem ## max = array_roundsize (stem ## cnt >> 1); \
292 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 294 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
293 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
294 } 296 }
295 297
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
296#define array_free(stem, idx) \ 303#define array_free(stem, idx) \
297 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
298 305
299/*****************************************************************************/ 306/*****************************************************************************/
300 307
… …
319 pendings [ABSPRI (w)][w->pending - 1].events |= events; 326 pendings [ABSPRI (w)][w->pending - 1].events |= events;
320 return; 327 return;
321 } 328 }
322 329
323 w->pending = ++pendingcnt [ABSPRI (w)]; 330 w->pending = ++pendingcnt [ABSPRI (w)];
324 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 331 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
325 pendings [ABSPRI (w)][w->pending - 1].w = w; 332 pendings [ABSPRI (w)][w->pending - 1].w = w;
326 pendings [ABSPRI (w)][w->pending - 1].events = events; 333 pendings [ABSPRI (w)][w->pending - 1].events = events;
327} 334}
328 335
329static void 336static void
… …
378} 385}
379 386
380static void 387static void
381fd_change (EV_P_ int fd) 388fd_change (EV_P_ int fd)
382{ 389{
383 if (anfds [fd].reify || fdchangecnt < 0) 390 if (anfds [fd].reify)
384 return; 391 return;
385 392
386 anfds [fd].reify = 1; 393 anfds [fd].reify = 1;
387 394
388 ++fdchangecnt; 395 ++fdchangecnt;
389 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 396 array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));
390 fdchanges [fdchangecnt - 1] = fd; 397 fdchanges [fdchangecnt - 1] = fd;
391} 398}
392 399
393static void 400static void
394fd_kill (EV_P_ int fd) 401fd_kill (EV_P_ int fd)
… …
400 ev_io_stop (EV_A_ w); 407 ev_io_stop (EV_A_ w);
401 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 408 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
402 } 409 }
403} 410}
404 411
412static int
413fd_valid (int fd)
414{
415#ifdef WIN32
416 return !!win32_get_osfhandle (fd);
417#else
418 return fcntl (fd, F_GETFD) != -1;
419#endif
420}
421
405/* called on EBADF to verify fds */ 422/* called on EBADF to verify fds */
406static void 423static void
407fd_ebadf (EV_P) 424fd_ebadf (EV_P)
408{ 425{
409 int fd; 426 int fd;
410 427
411 for (fd = 0; fd < anfdmax; ++fd) 428 for (fd = 0; fd < anfdmax; ++fd)
412 if (anfds [fd].events) 429 if (anfds [fd].events)
413 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 430 if (!fd_valid (fd) == -1 && errno == EBADF)
414 fd_kill (EV_A_ fd); 431 fd_kill (EV_A_ fd);
415} 432}
416 433
417/* called on ENOMEM in select/poll to kill some fds and retry */ 434/* called on ENOMEM in select/poll to kill some fds and retry */
418static void 435static void
… …
426 fd_kill (EV_A_ fd); 443 fd_kill (EV_A_ fd);
427 return; 444 return;
428 } 445 }
429} 446}
430 447
431/* susually called after fork if method needs to re-arm all fds from scratch */ 448/* usually called after fork if method needs to re-arm all fds from scratch */
432static void 449static void
433fd_rearm_all (EV_P) 450fd_rearm_all (EV_P)
434{ 451{
435 int fd; 452 int fd;
436 453
… …
567 ev_unref (EV_A); /* child watcher should not keep loop alive */ 584 ev_unref (EV_A); /* child watcher should not keep loop alive */
568} 585}
569 586
570/*****************************************************************************/ 587/*****************************************************************************/
571 588
589static struct ev_child *childs [PID_HASHSIZE];
590
572#ifndef WIN32 591#ifndef WIN32
573 592
574static struct ev_child *childs [PID_HASHSIZE];
575static struct ev_signal childev; 593static struct ev_signal childev;
576 594
577#ifndef WCONTINUED 595#ifndef WCONTINUED
578# define WCONTINUED 0 596# define WCONTINUED 0
579#endif 597#endif
… …
693 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 711 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
694#endif 712#endif
695#if EV_USE_SELECT 713#if EV_USE_SELECT
696 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 714 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
697#endif 715#endif
716
717 ev_watcher_init (&sigev, sigcb);
718 ev_set_priority (&sigev, EV_MAXPRI);
698 } 719 }
699} 720}
700 721
701void 722void
702loop_destroy (EV_P) 723loop_destroy (EV_P)
… …
720#endif 741#endif
721 742
722 for (i = NUMPRI; i--; ) 743 for (i = NUMPRI; i--; )
723 array_free (pending, [i]); 744 array_free (pending, [i]);
724 745
746 /* have to use the microsoft-never-gets-it-right macro */
725 array_free (fdchange, ); 747 array_free_microshit (fdchange);
726 array_free (timer, ); 748 array_free_microshit (timer);
727 array_free (periodic, ); 749 array_free_microshit (periodic);
728 array_free (idle, ); 750 array_free_microshit (idle);
729 array_free (prepare, ); 751 array_free_microshit (prepare);
730 array_free (check, ); 752 array_free_microshit (check);
731 753
732 method = 0; 754 method = 0;
733 /*TODO*/
734} 755}
735 756
736void 757static void
737loop_fork (EV_P) 758loop_fork (EV_P)
738{ 759{
739 /*TODO*/
740#if EV_USE_EPOLL 760#if EV_USE_EPOLL
741 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 761 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
742#endif 762#endif
743#if EV_USE_KQUEUE 763#if EV_USE_KQUEUE
744 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 764 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
745#endif 765#endif
766
767 if (ev_is_active (&sigev))
768 {
769 /* default loop */
770
771 ev_ref (EV_A);
772 ev_io_stop (EV_A_ &sigev);
773 close (sigpipe [0]);
774 close (sigpipe [1]);
775
776 while (pipe (sigpipe))
777 syserr ("(libev) error creating pipe");
778
779 siginit (EV_A);
780 }
781
782 postfork = 0;
746} 783}
747 784
748#if EV_MULTIPLICITY 785#if EV_MULTIPLICITY
749struct ev_loop * 786struct ev_loop *
750ev_loop_new (int methods) 787ev_loop_new (int methods)
… …
769} 806}
770 807
771void 808void
772ev_loop_fork (EV_P) 809ev_loop_fork (EV_P)
773{ 810{
774 loop_fork (EV_A); 811 postfork = 1;
775} 812}
776 813
777#endif 814#endif
778 815
779#if EV_MULTIPLICITY 816#if EV_MULTIPLICITY
… …
802 839
803 loop_init (EV_A_ methods); 840 loop_init (EV_A_ methods);
804 841
805 if (ev_method (EV_A)) 842 if (ev_method (EV_A))
806 { 843 {
807 ev_watcher_init (&sigev, sigcb);
808 ev_set_priority (&sigev, EV_MAXPRI);
809 siginit (EV_A); 844 siginit (EV_A);
810 845
811#ifndef WIN32 846#ifndef WIN32
812 ev_signal_init (&childev, childcb, SIGCHLD); 847 ev_signal_init (&childev, childcb, SIGCHLD);
813 ev_set_priority (&childev, EV_MAXPRI); 848 ev_set_priority (&childev, EV_MAXPRI);
… …
827{ 862{
828#if EV_MULTIPLICITY 863#if EV_MULTIPLICITY
829 struct ev_loop *loop = default_loop; 864 struct ev_loop *loop = default_loop;
830#endif 865#endif
831 866
867#ifndef WIN32
832 ev_ref (EV_A); /* child watcher */ 868 ev_ref (EV_A); /* child watcher */
833 ev_signal_stop (EV_A_ &childev); 869 ev_signal_stop (EV_A_ &childev);
870#endif
834 871
835 ev_ref (EV_A); /* signal watcher */ 872 ev_ref (EV_A); /* signal watcher */
836 ev_io_stop (EV_A_ &sigev); 873 ev_io_stop (EV_A_ &sigev);
837 874
838 close (sigpipe [0]); sigpipe [0] = 0; 875 close (sigpipe [0]); sigpipe [0] = 0;
… …
846{ 883{
847#if EV_MULTIPLICITY 884#if EV_MULTIPLICITY
848 struct ev_loop *loop = default_loop; 885 struct ev_loop *loop = default_loop;
849#endif 886#endif
850 887
851 loop_fork (EV_A); 888 if (method)
852 889 postfork = 1;
853 ev_io_stop (EV_A_ &sigev);
854 close (sigpipe [0]);
855 close (sigpipe [1]);
856 pipe (sigpipe);
857
858 ev_ref (EV_A); /* signal watcher */
859 siginit (EV_A);
860} 890}
861 891
862/*****************************************************************************/ 892/*****************************************************************************/
863 893
864static void 894static void
… …
1042 { 1072 {
1043 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1073 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044 call_pending (EV_A); 1074 call_pending (EV_A);
1045 } 1075 }
1046 1076
1077 /* we might have forked, so reify kernel state if necessary */
1078 if (expect_false (postfork))
1079 loop_fork (EV_A);
1080
1047 /* update fd-related kernel structures */ 1081 /* update fd-related kernel structures */
1048 fd_reify (EV_A); 1082 fd_reify (EV_A);
1049 1083
1050 /* calculate blocking time */ 1084 /* calculate blocking time */
1051 1085
… …
1205 ((WT)w)->at += mn_now; 1239 ((WT)w)->at += mn_now;
1206 1240
1207 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1241 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208 1242
1209 ev_start (EV_A_ (W)w, ++timercnt); 1243 ev_start (EV_A_ (W)w, ++timercnt);
1210 array_needsize (timers, timermax, timercnt, ); 1244 array_needsize (timers, timermax, timercnt, (void));
1211 timers [timercnt - 1] = w; 1245 timers [timercnt - 1] = w;
1212 upheap ((WT *)timers, timercnt - 1); 1246 upheap ((WT *)timers, timercnt - 1);
1213 1247
1214 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1248 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215} 1249}
… …
1262 /* this formula differs from the one in periodic_reify because we do not always round up */ 1296 /* this formula differs from the one in periodic_reify because we do not always round up */
1263 if (w->interval) 1297 if (w->interval)
1264 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1298 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1265 1299
1266 ev_start (EV_A_ (W)w, ++periodiccnt); 1300 ev_start (EV_A_ (W)w, ++periodiccnt);
1267 array_needsize (periodics, periodicmax, periodiccnt, ); 1301 array_needsize (periodics, periodicmax, periodiccnt, (void));
1268 periodics [periodiccnt - 1] = w; 1302 periodics [periodiccnt - 1] = w;
1269 upheap ((WT *)periodics, periodiccnt - 1); 1303 upheap ((WT *)periodics, periodiccnt - 1);
1270 1304
1271 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1305 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272} 1306}
… …
1294{ 1328{
1295 if (ev_is_active (w)) 1329 if (ev_is_active (w))
1296 return; 1330 return;
1297 1331
1298 ev_start (EV_A_ (W)w, ++idlecnt); 1332 ev_start (EV_A_ (W)w, ++idlecnt);
1299 array_needsize (idles, idlemax, idlecnt, ); 1333 array_needsize (idles, idlemax, idlecnt, (void));
1300 idles [idlecnt - 1] = w; 1334 idles [idlecnt - 1] = w;
1301} 1335}
1302 1336
1303void 1337void
1304ev_idle_stop (EV_P_ struct ev_idle *w) 1338ev_idle_stop (EV_P_ struct ev_idle *w)
… …
1316{ 1350{
1317 if (ev_is_active (w)) 1351 if (ev_is_active (w))
1318 return; 1352 return;
1319 1353
1320 ev_start (EV_A_ (W)w, ++preparecnt); 1354 ev_start (EV_A_ (W)w, ++preparecnt);
1321 array_needsize (prepares, preparemax, preparecnt, ); 1355 array_needsize (prepares, preparemax, preparecnt, (void));
1322 prepares [preparecnt - 1] = w; 1356 prepares [preparecnt - 1] = w;
1323} 1357}
1324 1358
1325void 1359void
1326ev_prepare_stop (EV_P_ struct ev_prepare *w) 1360ev_prepare_stop (EV_P_ struct ev_prepare *w)
… …
1338{ 1372{
1339 if (ev_is_active (w)) 1373 if (ev_is_active (w))
1340 return; 1374 return;
1341 1375
1342 ev_start (EV_A_ (W)w, ++checkcnt); 1376 ev_start (EV_A_ (W)w, ++checkcnt);
1343 array_needsize (checks, checkmax, checkcnt, ); 1377 array_needsize (checks, checkmax, checkcnt, (void));
1344 checks [checkcnt - 1] = w; 1378 checks [checkcnt - 1] = w;
1345} 1379}
1346 1380
1347void 1381void
1348ev_check_stop (EV_P_ struct ev_check *w) 1382ev_check_stop (EV_P_ struct ev_check *w)

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