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Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC vs.
Revision 1.324 by root, Sat Jan 23 20:15:57 2010 UTC

… …
110# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
111# endif 111# endif
112# endif 112# endif
113 113
114# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
117# else 117# else
118# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
119# endif 119# endif
120# endif 120# endif
… …
153 153
154#endif 154#endif
155 155
156#include <math.h> 156#include <math.h>
157#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
158#include <fcntl.h> 159#include <fcntl.h>
159#include <stddef.h> 160#include <stddef.h>
160 161
161#include <stdio.h> 162#include <stdio.h>
162 163
… …
504 505
505#ifndef EV_FD_TO_WIN32_HANDLE 506#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 508#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 509#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 511#endif
511#ifndef EV_WIN32_CLOSE_FD 512#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 513# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 514#endif
514 515
… …
963/* check whether the given fd is atcually valid, for error recovery */ 964/* check whether the given fd is atcually valid, for error recovery */
964inline_size int 965inline_size int
965fd_valid (int fd) 966fd_valid (int fd)
966{ 967{
967#ifdef _WIN32 968#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 969 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 970#else
970 return fcntl (fd, F_GETFD) != -1; 971 return fcntl (fd, F_GETFD) != -1;
971#endif 972#endif
972} 973}
973 974
… …
1178inline_speed void 1179inline_speed void
1179fd_intern (int fd) 1180fd_intern (int fd)
1180{ 1181{
1181#ifdef _WIN32 1182#ifdef _WIN32
1182 unsigned long arg = 1; 1183 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1184 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1184#else 1185#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC); 1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK); 1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif 1188#endif
1188} 1189}
… …
1293{ 1294{
1294#if EV_MULTIPLICITY 1295#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop; 1296 EV_P = signals [signum - 1].loop;
1296#endif 1297#endif
1297 1298
1298#if _WIN32 1299#ifdef _WIN32
1299 signal (signum, ev_sighandler); 1300 signal (signum, ev_sighandler);
1300#endif 1301#endif
1301 1302
1302 signals [signum - 1].pending = 1; 1303 signals [signum - 1].pending = 1;
1303 evpipe_write (EV_A_ &sig_pending); 1304 evpipe_write (EV_A_ &sig_pending);
… …
1604#endif 1605#endif
1605#if EV_USE_INOTIFY 1606#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 1608#endif
1608#if EV_USE_SIGNALFD 1609#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1610 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 1611#endif
1611 1612
1612 if (!(flags & 0x0000ffffU)) 1613 if (!(flags & 0x0000ffffU))
1613 flags |= ev_recommended_backends (); 1614 flags |= ev_recommended_backends ();
1614 1615
… …
1658 } 1659 }
1659 } 1660 }
1660 1661
1661#if EV_USE_SIGNALFD 1662#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 1663 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 1664 close (sigfd);
1668 }
1669#endif 1665#endif
1670 1666
1671#if EV_USE_INOTIFY 1667#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 1668 if (fs_fd >= 0)
1673 close (fs_fd); 1669 close (fs_fd);
… …
2161 ANHE_at_cache (*he); 2157 ANHE_at_cache (*he);
2162 } 2158 }
2163} 2159}
2164 2160
2165/* fetch new monotonic and realtime times from the kernel */ 2161/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 2162/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 2163inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 2164time_update (EV_P_ ev_tstamp max_block)
2169{ 2165{
2170#if EV_USE_MONOTONIC 2166#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 2167 if (expect_true (have_monotonic))
… …
2751 if (!((WL)w)->next) 2747 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 2748# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 2749 if (sigfd < 0) /*TODO*/
2754# endif 2750# endif
2755 { 2751 {
2756# if _WIN32 2752# ifdef _WIN32
2753 evpipe_init (EV_A);
2754
2757 signal (w->signum, ev_sighandler); 2755 signal (w->signum, ev_sighandler);
2758# else 2756# else
2759 struct sigaction sa; 2757 struct sigaction sa;
2760 2758
2761 evpipe_init (EV_A); 2759 evpipe_init (EV_A);
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 2790 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 2791#endif
2794#if EV_USE_SIGNALFD 2792#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 2793 if (sigfd >= 0)
2796 { 2794 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 2795 sigset_t ss;
2796
2797 sigemptyset (&ss);
2798 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 2799 sigdelset (&sigfd_set, w->signum);
2800
2799 signalfd (sigfd, &sigfd_set, 0); 2801 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 2802 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 2803 }
2803 else 2804 else
2804#endif 2805#endif
2805 signal (w->signum, SIG_DFL); 2806 signal (w->signum, SIG_DFL);
2806 } 2807 }
… …
2859static void noinline 2860static void noinline
2860infy_add (EV_P_ ev_stat *w) 2861infy_add (EV_P_ ev_stat *w)
2861{ 2862{
2862 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); 2863 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);
2863 2864
2864 if (w->wd < 0) 2865 if (w->wd >= 0)
2866 {
2867 struct statfs sfs;
2868
2869 /* now local changes will be tracked by inotify, but remote changes won't */
2870 /* unless the filesystem is known to be local, we therefore still poll */
2871 /* also do poll on <2.6.25, but with normal frequency */
2872
2873 if (!fs_2625)
2874 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2875 else if (!statfs (w->path, &sfs)
2876 && (sfs.f_type == 0x1373 /* devfs */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */
2878 || sfs.f_type == 0x3153464a /* jfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */
2881 || sfs.f_type == 0x58465342 /* xfs */))
2882 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2883 else
2884 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2865 { 2885 }
2886 else
2887 {
2888 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2889 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2868 2890
2869 /* monitor some parent directory for speedup hints */ 2891 /* if path is not there, monitor some parent directory for speedup hints */
2870 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2892 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2871 /* but an efficiency issue only */ 2893 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2894 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 2895 {
2874 char path [4096]; 2896 char path [4096];
… …
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2912 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 2913 }
2892 } 2914 }
2893 2915
2894 if (w->wd >= 0) 2916 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2917 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2899 2918
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 2919 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 2920 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer); 2921 ev_timer_again (EV_A_ &w->timer);
2915 } 2922 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 2923}
2917 2924
2918static void noinline 2925static void noinline
2919infy_del (EV_P_ ev_stat *w) 2926infy_del (EV_P_ ev_stat *w)
2920{ 2927{
… …
3025 { 3032 {
3026 fd_intern (fs_fd); 3033 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3034 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 3035 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 3036 ev_io_start (EV_A_ &fs_w);
3037 ev_unref (EV_A);
3030 } 3038 }
3031} 3039}
3032 3040
3033inline_size void 3041inline_size void
3034infy_fork (EV_P) 3042infy_fork (EV_P)
… …
3036 int slot; 3044 int slot;
3037 3045
3038 if (fs_fd < 0) 3046 if (fs_fd < 0)
3039 return; 3047 return;
3040 3048
3049 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 3050 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 3051 close (fs_fd);
3043 fs_fd = infy_newfd (); 3052 fs_fd = infy_newfd ();
3044 3053
3045 if (fs_fd >= 0) 3054 if (fs_fd >= 0)
3046 { 3055 {
3047 fd_intern (fs_fd); 3056 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 3057 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 3058 ev_io_start (EV_A_ &fs_w);
3059 ev_unref (EV_A);
3050 } 3060 }
3051 3061
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3062 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
3053 { 3063 {
3054 WL w_ = fs_hash [slot].head; 3064 WL w_ = fs_hash [slot].head;
… …
3062 w->wd = -1; 3072 w->wd = -1;
3063 3073
3064 if (fs_fd >= 0) 3074 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 3075 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 3076 else
3077 {
3078 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3079 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 3080 ev_timer_again (EV_A_ &w->timer);
3081 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3082 }
3068 } 3083 }
3069 } 3084 }
3070} 3085}
3071 3086
3072#endif 3087#endif
… …
3089static void noinline 3104static void noinline
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3105stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 3106{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3107 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 3108
3094 /* we copy this here each the time so that */ 3109 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 3110 ev_stat_stat (EV_A_ w);
3098 3111
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3112 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 3113 if (
3101 w->prev.st_dev != w->attr.st_dev 3114 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 3115 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 3116 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 3117 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 3118 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 3119 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 3120 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 3121 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 3122 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 3123 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 3124 || prev.st_ctime != w->attr.st_ctime
3112 ) { 3125 ) {
3126 /* we only update w->prev on actual differences */
3127 /* in case we test more often than invoke the callback, */
3128 /* to ensure that prev is always different to attr */
3129 w->prev = prev;
3130
3113 #if EV_USE_INOTIFY 3131 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 3132 if (fs_fd >= 0)
3115 { 3133 {
3116 infy_del (EV_A_ w); 3134 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 3135 infy_add (EV_A_ w);
… …
3142 3160
3143 if (fs_fd >= 0) 3161 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 3162 infy_add (EV_A_ w);
3145 else 3163 else
3146#endif 3164#endif
3165 {
3147 ev_timer_again (EV_A_ &w->timer); 3166 ev_timer_again (EV_A_ &w->timer);
3167 ev_unref (EV_A);
3168 }
3148 3169
3149 ev_start (EV_A_ (W)w, 1); 3170 ev_start (EV_A_ (W)w, 1);
3150 3171
3151 EV_FREQUENT_CHECK; 3172 EV_FREQUENT_CHECK;
3152} 3173}
… …
3161 EV_FREQUENT_CHECK; 3182 EV_FREQUENT_CHECK;
3162 3183
3163#if EV_USE_INOTIFY 3184#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 3185 infy_del (EV_A_ w);
3165#endif 3186#endif
3187
3188 if (ev_is_active (&w->timer))
3189 {
3190 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 3191 ev_timer_stop (EV_A_ &w->timer);
3192 }
3167 3193
3168 ev_stop (EV_A_ (W)w); 3194 ev_stop (EV_A_ (W)w);
3169 3195
3170 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
3171} 3197}

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