1 | /* |
1 | /* |
2 | * libev kqueue backend |
2 | * libev kqueue backend |
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 | * |
… | |
… | |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
40 | #include <sys/types.h> |
40 | #include <sys/types.h> |
41 | #include <sys/time.h> |
41 | #include <sys/time.h> |
42 | #include <sys/queue.h> |
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43 | #include <sys/event.h> |
42 | #include <sys/event.h> |
44 | #include <string.h> |
43 | #include <string.h> |
45 | #include <errno.h> |
44 | #include <errno.h> |
46 | |
45 | |
47 | void inline_speed |
46 | void inline_speed |
… | |
… | |
51 | array_needsize (struct kevent, kqueue_changes, kqueue_changemax, kqueue_changecnt, EMPTY2); |
50 | array_needsize (struct kevent, kqueue_changes, kqueue_changemax, kqueue_changecnt, EMPTY2); |
52 | |
51 | |
53 | EV_SET (&kqueue_changes [kqueue_changecnt - 1], fd, filter, flags, fflags, 0, 0); |
52 | EV_SET (&kqueue_changes [kqueue_changecnt - 1], fd, filter, flags, fflags, 0, 0); |
54 | } |
53 | } |
55 | |
54 | |
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55 | /* OS X at least needs this */ |
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56 | #ifndef EV_ENABLE |
|
|
57 | # define EV_ENABLE 0 |
|
|
58 | #endif |
56 | #ifndef NOTE_EOF |
59 | #ifndef NOTE_EOF |
57 | # define NOTE_EOF 0 |
60 | # define NOTE_EOF 0 |
58 | #endif |
61 | #endif |
59 | |
62 | |
60 | static void |
63 | static void |
… | |
… | |
71 | |
74 | |
72 | /* to detect close/reopen reliably, we have to re-add */ |
75 | /* to detect close/reopen reliably, we have to re-add */ |
73 | /* event requests even when oev == nev */ |
76 | /* event requests even when oev == nev */ |
74 | |
77 | |
75 | if (nev & EV_READ) |
78 | if (nev & EV_READ) |
76 | kqueue_change (EV_A_ fd, EVFILT_READ , EV_ADD, NOTE_EOF); |
79 | kqueue_change (EV_A_ fd, EVFILT_READ , EV_ADD | EV_ENABLE, NOTE_EOF); |
77 | |
80 | |
78 | if (nev & EV_WRITE) |
81 | if (nev & EV_WRITE) |
79 | kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD, NOTE_EOF); |
82 | kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD | EV_ENABLE, NOTE_EOF); |
80 | } |
83 | } |
81 | |
84 | |
82 | static void |
85 | static void |
83 | kqueue_poll (EV_P_ ev_tstamp timeout) |
86 | kqueue_poll (EV_P_ ev_tstamp timeout) |
84 | { |
87 | { |
… | |
… | |
112 | { |
115 | { |
113 | int fd = kqueue_events [i].ident; |
116 | int fd = kqueue_events [i].ident; |
114 | |
117 | |
115 | if (expect_false (kqueue_events [i].flags & EV_ERROR)) |
118 | if (expect_false (kqueue_events [i].flags & EV_ERROR)) |
116 | { |
119 | { |
117 | int err = kqueue_events [i].data; |
120 | int err = kqueue_events [i].data; |
118 | |
121 | |
119 | /* we are only interested in errors for fds that we are interested in :) */ |
122 | /* we are only interested in errors for fds that we are interested in :) */ |
120 | if (anfds [fd].events) |
123 | if (anfds [fd].events) |
121 | { |
124 | { |
122 | if (err == ENOENT) /* resubmit changes on ENOENT */ |
125 | if (err == ENOENT) /* resubmit changes on ENOENT */ |
123 | kqueue_modify (EV_A_ fd, 0, anfds [fd].events); |
126 | kqueue_modify (EV_A_ fd, 0, anfds [fd].events); |
124 | else if (err == EBADF) /* on EBADF, we re-check the fd */ |
127 | else if (err == EBADF) /* on EBADF, we re-check the fd */ |
125 | { |
128 | { |
126 | if (fd_valid (fd)) |
129 | if (fd_valid (fd)) |
… | |
… | |
128 | else |
131 | else |
129 | fd_kill (EV_A_ fd); |
132 | fd_kill (EV_A_ fd); |
130 | } |
133 | } |
131 | else /* on all other errors, we error out on the fd */ |
134 | else /* on all other errors, we error out on the fd */ |
132 | fd_kill (EV_A_ fd); |
135 | fd_kill (EV_A_ fd); |
133 | } |
136 | } |
134 | } |
137 | } |
135 | else |
138 | else |
136 | fd_event ( |
139 | fd_event ( |
137 | EV_A_ |
140 | EV_A_ |
138 | fd, |
141 | fd, |