1 | /* |
1 | /* |
2 | * libev kqueue backend |
2 | * libev kqueue backend |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2019 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 | * |
… | |
… | |
41 | #include <sys/time.h> |
41 | #include <sys/time.h> |
42 | #include <sys/event.h> |
42 | #include <sys/event.h> |
43 | #include <string.h> |
43 | #include <string.h> |
44 | #include <errno.h> |
44 | #include <errno.h> |
45 | |
45 | |
46 | void inline_speed |
46 | inline_speed |
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|
47 | void |
47 | kqueue_change (EV_P_ int fd, int filter, int flags, int fflags) |
48 | kqueue_change (EV_P_ int fd, int filter, int flags, int fflags) |
48 | { |
49 | { |
49 | ++kqueue_changecnt; |
50 | ++kqueue_changecnt; |
50 | array_needsize (struct kevent, kqueue_changes, kqueue_changemax, kqueue_changecnt, EMPTY2); |
51 | array_needsize (struct kevent, kqueue_changes, kqueue_changemax, kqueue_changecnt, array_needsize_noinit); |
51 | |
52 | |
52 | EV_SET (&kqueue_changes [kqueue_changecnt - 1], fd, filter, flags, fflags, 0, 0); |
53 | EV_SET (&kqueue_changes [kqueue_changecnt - 1], fd, filter, flags, fflags, 0, 0); |
53 | } |
54 | } |
54 | |
55 | |
55 | /* OS X at least needs this */ |
56 | /* OS X at least needs this */ |
… | |
… | |
150 | kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_eventmax + 1); |
151 | kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_eventmax + 1); |
151 | kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax); |
152 | kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax); |
152 | } |
153 | } |
153 | } |
154 | } |
154 | |
155 | |
155 | int inline_size |
156 | inline_size |
|
|
157 | int |
156 | kqueue_init (EV_P_ int flags) |
158 | kqueue_init (EV_P_ int flags) |
157 | { |
159 | { |
158 | /* initialize the kernel queue */ |
160 | /* initialize the kernel queue */ |
159 | kqueue_fd_pid = getpid (); |
161 | kqueue_fd_pid = getpid (); |
160 | if ((backend_fd = kqueue ()) < 0) |
162 | if ((backend_fd = kqueue ()) < 0) |
… | |
… | |
174 | kqueue_changecnt = 0; |
176 | kqueue_changecnt = 0; |
175 | |
177 | |
176 | return EVBACKEND_KQUEUE; |
178 | return EVBACKEND_KQUEUE; |
177 | } |
179 | } |
178 | |
180 | |
179 | void inline_size |
181 | inline_size |
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|
182 | void |
180 | kqueue_destroy (EV_P) |
183 | kqueue_destroy (EV_P) |
181 | { |
184 | { |
182 | ev_free (kqueue_events); |
185 | ev_free (kqueue_events); |
183 | ev_free (kqueue_changes); |
186 | ev_free (kqueue_changes); |
184 | } |
187 | } |
185 | |
188 | |
186 | void inline_size |
189 | inline_size |
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|
190 | void |
187 | kqueue_fork (EV_P) |
191 | kqueue_fork (EV_P) |
188 | { |
192 | { |
189 | /* some BSD kernels don't just destroy the kqueue itself, |
193 | /* some BSD kernels don't just destroy the kqueue itself, |
190 | * but also close the fd, which isn't documented, and |
194 | * but also close the fd, which isn't documented, and |
191 | * impossible to support properly. |
195 | * impossible to support properly. |