1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008 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 |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | #ifdef __cplusplus |
33 | extern "C" { |
41 | extern "C" { |
34 | #endif |
42 | #endif |
… | |
… | |
280 | |
288 | |
281 | typedef ev_watcher *W; |
289 | typedef ev_watcher *W; |
282 | typedef ev_watcher_list *WL; |
290 | typedef ev_watcher_list *WL; |
283 | typedef ev_watcher_time *WT; |
291 | typedef ev_watcher_time *WT; |
284 | |
292 | |
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|
293 | #if EV_USE_MONOTONIC |
285 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
294 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
286 | /* giving it a reasonably high chance of working on typical architetcures */ |
295 | /* giving it a reasonably high chance of working on typical architetcures */ |
287 | static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
296 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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|
297 | #endif |
288 | |
298 | |
289 | #ifdef _WIN32 |
299 | #ifdef _WIN32 |
290 | # include "ev_win32.c" |
300 | # include "ev_win32.c" |
291 | #endif |
301 | #endif |
292 | |
302 | |
… | |
… | |
590 | |
600 | |
591 | #if EV_SELECT_IS_WINSOCKET |
601 | #if EV_SELECT_IS_WINSOCKET |
592 | if (events) |
602 | if (events) |
593 | { |
603 | { |
594 | unsigned long argp; |
604 | unsigned long argp; |
|
|
605 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
606 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
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|
607 | #else |
595 | anfd->handle = _get_osfhandle (fd); |
608 | anfd->handle = _get_osfhandle (fd); |
|
|
609 | #endif |
596 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
610 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
597 | } |
611 | } |
598 | #endif |
612 | #endif |
599 | |
613 | |
600 | { |
614 | { |
… | |
… | |
749 | /*****************************************************************************/ |
763 | /*****************************************************************************/ |
750 | |
764 | |
751 | typedef struct |
765 | typedef struct |
752 | { |
766 | { |
753 | WL head; |
767 | WL head; |
754 | sig_atomic_t volatile gotsig; |
768 | EV_ATOMIC_T gotsig; |
755 | } ANSIG; |
769 | } ANSIG; |
756 | |
770 | |
757 | static ANSIG *signals; |
771 | static ANSIG *signals; |
758 | static int signalmax; |
772 | static int signalmax; |
759 | |
773 | |
760 | static int sigpipe [2]; |
774 | static EV_ATOMIC_T gotsig; |
761 | static sig_atomic_t volatile gotsig; |
|
|
762 | static ev_io sigev; |
|
|
763 | |
775 | |
764 | void inline_size |
776 | void inline_size |
765 | signals_init (ANSIG *base, int count) |
777 | signals_init (ANSIG *base, int count) |
766 | { |
778 | { |
767 | while (count--) |
779 | while (count--) |
… | |
… | |
771 | |
783 | |
772 | ++base; |
784 | ++base; |
773 | } |
785 | } |
774 | } |
786 | } |
775 | |
787 | |
776 | static void |
788 | /*****************************************************************************/ |
777 | sighandler (int signum) |
|
|
778 | { |
|
|
779 | #if _WIN32 |
|
|
780 | signal (signum, sighandler); |
|
|
781 | #endif |
|
|
782 | |
|
|
783 | signals [signum - 1].gotsig = 1; |
|
|
784 | |
|
|
785 | if (!gotsig) |
|
|
786 | { |
|
|
787 | int old_errno = errno; |
|
|
788 | gotsig = 1; |
|
|
789 | write (sigpipe [1], &signum, 1); |
|
|
790 | errno = old_errno; |
|
|
791 | } |
|
|
792 | } |
|
|
793 | |
|
|
794 | void noinline |
|
|
795 | ev_feed_signal_event (EV_P_ int signum) |
|
|
796 | { |
|
|
797 | WL w; |
|
|
798 | |
|
|
799 | #if EV_MULTIPLICITY |
|
|
800 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
801 | #endif |
|
|
802 | |
|
|
803 | --signum; |
|
|
804 | |
|
|
805 | if (signum < 0 || signum >= signalmax) |
|
|
806 | return; |
|
|
807 | |
|
|
808 | signals [signum].gotsig = 0; |
|
|
809 | |
|
|
810 | for (w = signals [signum].head; w; w = w->next) |
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811 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
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812 | } |
|
|
813 | |
|
|
814 | static void |
|
|
815 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
816 | { |
|
|
817 | int signum; |
|
|
818 | |
|
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819 | read (sigpipe [0], &revents, 1); |
|
|
820 | gotsig = 0; |
|
|
821 | |
|
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822 | for (signum = signalmax; signum--; ) |
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823 | if (signals [signum].gotsig) |
|
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824 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
825 | } |
|
|
826 | |
789 | |
827 | void inline_speed |
790 | void inline_speed |
828 | fd_intern (int fd) |
791 | fd_intern (int fd) |
829 | { |
792 | { |
830 | #ifdef _WIN32 |
793 | #ifdef _WIN32 |
… | |
… | |
835 | fcntl (fd, F_SETFL, O_NONBLOCK); |
798 | fcntl (fd, F_SETFL, O_NONBLOCK); |
836 | #endif |
799 | #endif |
837 | } |
800 | } |
838 | |
801 | |
839 | static void noinline |
802 | static void noinline |
840 | siginit (EV_P) |
803 | evpipe_init (EV_P) |
841 | { |
804 | { |
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|
805 | if (!ev_is_active (&pipeev)) |
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|
806 | { |
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807 | while (pipe (evpipe)) |
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|
808 | syserr ("(libev) error creating signal/async pipe"); |
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|
809 | |
842 | fd_intern (sigpipe [0]); |
810 | fd_intern (evpipe [0]); |
843 | fd_intern (sigpipe [1]); |
811 | fd_intern (evpipe [1]); |
844 | |
812 | |
845 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
813 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
846 | ev_io_start (EV_A_ &sigev); |
814 | ev_io_start (EV_A_ &pipeev); |
847 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
815 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
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|
816 | } |
|
|
817 | } |
|
|
818 | |
|
|
819 | void inline_size |
|
|
820 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
821 | { |
|
|
822 | if (!*flag) |
|
|
823 | { |
|
|
824 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
825 | |
|
|
826 | *flag = 1; |
|
|
827 | write (evpipe [1], &old_errno, 1); |
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|
828 | |
|
|
829 | errno = old_errno; |
|
|
830 | } |
|
|
831 | } |
|
|
832 | |
|
|
833 | static void |
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|
834 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
835 | { |
|
|
836 | { |
|
|
837 | int dummy; |
|
|
838 | read (evpipe [0], &dummy, 1); |
|
|
839 | } |
|
|
840 | |
|
|
841 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
842 | { |
|
|
843 | int signum; |
|
|
844 | gotsig = 0; |
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|
845 | |
|
|
846 | for (signum = signalmax; signum--; ) |
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|
847 | if (signals [signum].gotsig) |
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|
848 | ev_feed_signal_event (EV_A_ signum + 1); |
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|
849 | } |
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|
850 | |
|
|
851 | #if EV_ASYNC_ENABLE |
|
|
852 | if (gotasync) |
|
|
853 | { |
|
|
854 | int i; |
|
|
855 | gotasync = 0; |
|
|
856 | |
|
|
857 | for (i = asynccnt; i--; ) |
|
|
858 | if (asyncs [i]->sent) |
|
|
859 | { |
|
|
860 | asyncs [i]->sent = 0; |
|
|
861 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
862 | } |
|
|
863 | } |
|
|
864 | #endif |
848 | } |
865 | } |
849 | |
866 | |
850 | /*****************************************************************************/ |
867 | /*****************************************************************************/ |
851 | |
868 | |
|
|
869 | static void |
|
|
870 | sighandler (int signum) |
|
|
871 | { |
|
|
872 | #if EV_MULTIPLICITY |
|
|
873 | struct ev_loop *loop = &default_loop_struct; |
|
|
874 | #endif |
|
|
875 | |
|
|
876 | #if _WIN32 |
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|
877 | signal (signum, sighandler); |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | signals [signum - 1].gotsig = 1; |
|
|
881 | evpipe_write (EV_A_ &gotsig); |
|
|
882 | } |
|
|
883 | |
|
|
884 | void noinline |
|
|
885 | ev_feed_signal_event (EV_P_ int signum) |
|
|
886 | { |
|
|
887 | WL w; |
|
|
888 | |
|
|
889 | #if EV_MULTIPLICITY |
|
|
890 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
891 | #endif |
|
|
892 | |
|
|
893 | --signum; |
|
|
894 | |
|
|
895 | if (signum < 0 || signum >= signalmax) |
|
|
896 | return; |
|
|
897 | |
|
|
898 | signals [signum].gotsig = 0; |
|
|
899 | |
|
|
900 | for (w = signals [signum].head; w; w = w->next) |
|
|
901 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
902 | } |
|
|
903 | |
|
|
904 | /*****************************************************************************/ |
|
|
905 | |
852 | static WL childs [EV_PID_HASHSIZE]; |
906 | static WL childs [EV_PID_HASHSIZE]; |
853 | |
907 | |
854 | #ifndef _WIN32 |
908 | #ifndef _WIN32 |
855 | |
909 | |
856 | static ev_signal childev; |
910 | static ev_signal childev; |
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|
911 | |
|
|
912 | #ifndef WIFCONTINUED |
|
|
913 | # define WIFCONTINUED(status) 0 |
|
|
914 | #endif |
857 | |
915 | |
858 | void inline_speed |
916 | void inline_speed |
859 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
917 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
860 | { |
918 | { |
861 | ev_child *w; |
919 | ev_child *w; |
|
|
920 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
862 | |
921 | |
863 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
922 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
923 | { |
864 | if (w->pid == pid || !w->pid) |
924 | if ((w->pid == pid || !w->pid) |
|
|
925 | && (!traced || (w->flags & 1))) |
865 | { |
926 | { |
866 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
927 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
867 | w->rpid = pid; |
928 | w->rpid = pid; |
868 | w->rstatus = status; |
929 | w->rstatus = status; |
869 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
930 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
870 | } |
931 | } |
|
|
932 | } |
871 | } |
933 | } |
872 | |
934 | |
873 | #ifndef WCONTINUED |
935 | #ifndef WCONTINUED |
874 | # define WCONTINUED 0 |
936 | # define WCONTINUED 0 |
875 | #endif |
937 | #endif |
… | |
… | |
978 | |
1040 | |
979 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1041 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
980 | /* please fix it and tell me how to detect the fix */ |
1042 | /* please fix it and tell me how to detect the fix */ |
981 | flags &= ~EVBACKEND_EPOLL; |
1043 | flags &= ~EVBACKEND_EPOLL; |
982 | |
1044 | |
983 | #ifdef __APPLE__ |
|
|
984 | /* is there anything thats not broken on darwin? */ |
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|
985 | flags &= ~EVBACKEND_KQUEUE; |
|
|
986 | #endif |
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987 | |
|
|
988 | return flags; |
1045 | return flags; |
989 | } |
1046 | } |
990 | |
1047 | |
991 | unsigned int |
1048 | unsigned int |
992 | ev_backend (EV_P) |
1049 | ev_backend (EV_P) |
… | |
… | |
1023 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1080 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1024 | have_monotonic = 1; |
1081 | have_monotonic = 1; |
1025 | } |
1082 | } |
1026 | #endif |
1083 | #endif |
1027 | |
1084 | |
1028 | ev_rt_now = ev_time (); |
1085 | ev_rt_now = ev_time (); |
1029 | mn_now = get_clock (); |
1086 | mn_now = get_clock (); |
1030 | now_floor = mn_now; |
1087 | now_floor = mn_now; |
1031 | rtmn_diff = ev_rt_now - mn_now; |
1088 | rtmn_diff = ev_rt_now - mn_now; |
1032 | |
1089 | |
1033 | io_blocktime = 0.; |
1090 | io_blocktime = 0.; |
1034 | timeout_blocktime = 0.; |
1091 | timeout_blocktime = 0.; |
|
|
1092 | backend = 0; |
|
|
1093 | backend_fd = -1; |
|
|
1094 | gotasync = 0; |
|
|
1095 | #if EV_USE_INOTIFY |
|
|
1096 | fs_fd = -2; |
|
|
1097 | #endif |
1035 | |
1098 | |
1036 | /* pid check not overridable via env */ |
1099 | /* pid check not overridable via env */ |
1037 | #ifndef _WIN32 |
1100 | #ifndef _WIN32 |
1038 | if (flags & EVFLAG_FORKCHECK) |
1101 | if (flags & EVFLAG_FORKCHECK) |
1039 | curpid = getpid (); |
1102 | curpid = getpid (); |
… | |
… | |
1045 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1108 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1046 | |
1109 | |
1047 | if (!(flags & 0x0000ffffUL)) |
1110 | if (!(flags & 0x0000ffffUL)) |
1048 | flags |= ev_recommended_backends (); |
1111 | flags |= ev_recommended_backends (); |
1049 | |
1112 | |
1050 | backend = 0; |
|
|
1051 | backend_fd = -1; |
|
|
1052 | #if EV_USE_INOTIFY |
|
|
1053 | fs_fd = -2; |
|
|
1054 | #endif |
|
|
1055 | |
|
|
1056 | #if EV_USE_PORT |
1113 | #if EV_USE_PORT |
1057 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1114 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1058 | #endif |
1115 | #endif |
1059 | #if EV_USE_KQUEUE |
1116 | #if EV_USE_KQUEUE |
1060 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1117 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1067 | #endif |
1124 | #endif |
1068 | #if EV_USE_SELECT |
1125 | #if EV_USE_SELECT |
1069 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1126 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1070 | #endif |
1127 | #endif |
1071 | |
1128 | |
1072 | ev_init (&sigev, sigcb); |
1129 | ev_init (&pipeev, pipecb); |
1073 | ev_set_priority (&sigev, EV_MAXPRI); |
1130 | ev_set_priority (&pipeev, EV_MAXPRI); |
1074 | } |
1131 | } |
1075 | } |
1132 | } |
1076 | |
1133 | |
1077 | static void noinline |
1134 | static void noinline |
1078 | loop_destroy (EV_P) |
1135 | loop_destroy (EV_P) |
1079 | { |
1136 | { |
1080 | int i; |
1137 | int i; |
|
|
1138 | |
|
|
1139 | if (ev_is_active (&pipeev)) |
|
|
1140 | { |
|
|
1141 | ev_ref (EV_A); /* signal watcher */ |
|
|
1142 | ev_io_stop (EV_A_ &pipeev); |
|
|
1143 | |
|
|
1144 | close (evpipe [0]); evpipe [0] = 0; |
|
|
1145 | close (evpipe [1]); evpipe [1] = 0; |
|
|
1146 | } |
1081 | |
1147 | |
1082 | #if EV_USE_INOTIFY |
1148 | #if EV_USE_INOTIFY |
1083 | if (fs_fd >= 0) |
1149 | if (fs_fd >= 0) |
1084 | close (fs_fd); |
1150 | close (fs_fd); |
1085 | #endif |
1151 | #endif |
… | |
… | |
1122 | #if EV_FORK_ENABLE |
1188 | #if EV_FORK_ENABLE |
1123 | array_free (fork, EMPTY); |
1189 | array_free (fork, EMPTY); |
1124 | #endif |
1190 | #endif |
1125 | array_free (prepare, EMPTY); |
1191 | array_free (prepare, EMPTY); |
1126 | array_free (check, EMPTY); |
1192 | array_free (check, EMPTY); |
|
|
1193 | #if EV_ASYNC_ENABLE |
|
|
1194 | array_free (async, EMPTY); |
|
|
1195 | #endif |
1127 | |
1196 | |
1128 | backend = 0; |
1197 | backend = 0; |
1129 | } |
1198 | } |
1130 | |
1199 | |
1131 | void inline_size infy_fork (EV_P); |
1200 | void inline_size infy_fork (EV_P); |
… | |
… | |
1144 | #endif |
1213 | #endif |
1145 | #if EV_USE_INOTIFY |
1214 | #if EV_USE_INOTIFY |
1146 | infy_fork (EV_A); |
1215 | infy_fork (EV_A); |
1147 | #endif |
1216 | #endif |
1148 | |
1217 | |
1149 | if (ev_is_active (&sigev)) |
1218 | if (ev_is_active (&pipeev)) |
1150 | { |
1219 | { |
1151 | /* default loop */ |
1220 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1221 | /* while we modify the fd vars */ |
|
|
1222 | gotsig = 1; |
|
|
1223 | #if EV_ASYNC_ENABLE |
|
|
1224 | gotasync = 1; |
|
|
1225 | #endif |
1152 | |
1226 | |
1153 | ev_ref (EV_A); |
1227 | ev_ref (EV_A); |
1154 | ev_io_stop (EV_A_ &sigev); |
1228 | ev_io_stop (EV_A_ &pipeev); |
1155 | close (sigpipe [0]); |
1229 | close (evpipe [0]); |
1156 | close (sigpipe [1]); |
1230 | close (evpipe [1]); |
1157 | |
1231 | |
1158 | while (pipe (sigpipe)) |
|
|
1159 | syserr ("(libev) error creating pipe"); |
|
|
1160 | |
|
|
1161 | siginit (EV_A); |
1232 | evpipe_init (EV_A); |
|
|
1233 | /* now iterate over everything, in case we missed something */ |
|
|
1234 | pipecb (EV_A_ &pipeev, EV_READ); |
1162 | } |
1235 | } |
1163 | |
1236 | |
1164 | postfork = 0; |
1237 | postfork = 0; |
1165 | } |
1238 | } |
1166 | |
1239 | |
… | |
… | |
1188 | } |
1261 | } |
1189 | |
1262 | |
1190 | void |
1263 | void |
1191 | ev_loop_fork (EV_P) |
1264 | ev_loop_fork (EV_P) |
1192 | { |
1265 | { |
1193 | postfork = 1; |
1266 | postfork = 1; /* must be in line with ev_default_fork */ |
1194 | } |
1267 | } |
1195 | |
1268 | |
1196 | #endif |
1269 | #endif |
1197 | |
1270 | |
1198 | #if EV_MULTIPLICITY |
1271 | #if EV_MULTIPLICITY |
… | |
… | |
1201 | #else |
1274 | #else |
1202 | int |
1275 | int |
1203 | ev_default_loop (unsigned int flags) |
1276 | ev_default_loop (unsigned int flags) |
1204 | #endif |
1277 | #endif |
1205 | { |
1278 | { |
1206 | if (sigpipe [0] == sigpipe [1]) |
|
|
1207 | if (pipe (sigpipe)) |
|
|
1208 | return 0; |
|
|
1209 | |
|
|
1210 | if (!ev_default_loop_ptr) |
1279 | if (!ev_default_loop_ptr) |
1211 | { |
1280 | { |
1212 | #if EV_MULTIPLICITY |
1281 | #if EV_MULTIPLICITY |
1213 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1282 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1214 | #else |
1283 | #else |
… | |
… | |
1217 | |
1286 | |
1218 | loop_init (EV_A_ flags); |
1287 | loop_init (EV_A_ flags); |
1219 | |
1288 | |
1220 | if (ev_backend (EV_A)) |
1289 | if (ev_backend (EV_A)) |
1221 | { |
1290 | { |
1222 | siginit (EV_A); |
|
|
1223 | |
|
|
1224 | #ifndef _WIN32 |
1291 | #ifndef _WIN32 |
1225 | ev_signal_init (&childev, childcb, SIGCHLD); |
1292 | ev_signal_init (&childev, childcb, SIGCHLD); |
1226 | ev_set_priority (&childev, EV_MAXPRI); |
1293 | ev_set_priority (&childev, EV_MAXPRI); |
1227 | ev_signal_start (EV_A_ &childev); |
1294 | ev_signal_start (EV_A_ &childev); |
1228 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1295 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1245 | #ifndef _WIN32 |
1312 | #ifndef _WIN32 |
1246 | ev_ref (EV_A); /* child watcher */ |
1313 | ev_ref (EV_A); /* child watcher */ |
1247 | ev_signal_stop (EV_A_ &childev); |
1314 | ev_signal_stop (EV_A_ &childev); |
1248 | #endif |
1315 | #endif |
1249 | |
1316 | |
1250 | ev_ref (EV_A); /* signal watcher */ |
|
|
1251 | ev_io_stop (EV_A_ &sigev); |
|
|
1252 | |
|
|
1253 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1254 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1255 | |
|
|
1256 | loop_destroy (EV_A); |
1317 | loop_destroy (EV_A); |
1257 | } |
1318 | } |
1258 | |
1319 | |
1259 | void |
1320 | void |
1260 | ev_default_fork (void) |
1321 | ev_default_fork (void) |
… | |
… | |
1262 | #if EV_MULTIPLICITY |
1323 | #if EV_MULTIPLICITY |
1263 | struct ev_loop *loop = ev_default_loop_ptr; |
1324 | struct ev_loop *loop = ev_default_loop_ptr; |
1264 | #endif |
1325 | #endif |
1265 | |
1326 | |
1266 | if (backend) |
1327 | if (backend) |
1267 | postfork = 1; |
1328 | postfork = 1; /* must be in line with ev_loop_fork */ |
1268 | } |
1329 | } |
1269 | |
1330 | |
1270 | /*****************************************************************************/ |
1331 | /*****************************************************************************/ |
1271 | |
1332 | |
1272 | void |
1333 | void |
… | |
… | |
1846 | #endif |
1907 | #endif |
1847 | if (expect_false (ev_is_active (w))) |
1908 | if (expect_false (ev_is_active (w))) |
1848 | return; |
1909 | return; |
1849 | |
1910 | |
1850 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1911 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1912 | |
|
|
1913 | evpipe_init (EV_A); |
1851 | |
1914 | |
1852 | { |
1915 | { |
1853 | #ifndef _WIN32 |
1916 | #ifndef _WIN32 |
1854 | sigset_t full, prev; |
1917 | sigset_t full, prev; |
1855 | sigfillset (&full); |
1918 | sigfillset (&full); |
… | |
… | |
2369 | |
2432 | |
2370 | ev_stop (EV_A_ (W)w); |
2433 | ev_stop (EV_A_ (W)w); |
2371 | } |
2434 | } |
2372 | #endif |
2435 | #endif |
2373 | |
2436 | |
|
|
2437 | #if EV_ASYNC_ENABLE |
|
|
2438 | void |
|
|
2439 | ev_async_start (EV_P_ ev_async *w) |
|
|
2440 | { |
|
|
2441 | if (expect_false (ev_is_active (w))) |
|
|
2442 | return; |
|
|
2443 | |
|
|
2444 | evpipe_init (EV_A); |
|
|
2445 | |
|
|
2446 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2447 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2448 | asyncs [asynccnt - 1] = w; |
|
|
2449 | } |
|
|
2450 | |
|
|
2451 | void |
|
|
2452 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2453 | { |
|
|
2454 | clear_pending (EV_A_ (W)w); |
|
|
2455 | if (expect_false (!ev_is_active (w))) |
|
|
2456 | return; |
|
|
2457 | |
|
|
2458 | { |
|
|
2459 | int active = ((W)w)->active; |
|
|
2460 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2461 | ((W)asyncs [active - 1])->active = active; |
|
|
2462 | } |
|
|
2463 | |
|
|
2464 | ev_stop (EV_A_ (W)w); |
|
|
2465 | } |
|
|
2466 | |
|
|
2467 | void |
|
|
2468 | ev_async_send (EV_P_ ev_async *w) |
|
|
2469 | { |
|
|
2470 | w->sent = 1; |
|
|
2471 | evpipe_write (EV_A_ &gotasync); |
|
|
2472 | } |
|
|
2473 | #endif |
|
|
2474 | |
2374 | /*****************************************************************************/ |
2475 | /*****************************************************************************/ |
2375 | |
2476 | |
2376 | struct ev_once |
2477 | struct ev_once |
2377 | { |
2478 | { |
2378 | ev_io io; |
2479 | ev_io io; |