| 1 | /* |
1 | /* |
| 2 | * libev kqueue backend |
2 | * libev kqueue backend |
| 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 | #include <sys/types.h> |
40 | #include <sys/types.h> |
| 33 | #include <sys/time.h> |
41 | #include <sys/time.h> |
| 34 | #include <sys/queue.h> |
42 | #include <sys/queue.h> |
| … | |
… | |
| 91 | kqueue_changecnt = 0; |
99 | kqueue_changecnt = 0; |
| 92 | |
100 | |
| 93 | if (expect_false (res < 0)) |
101 | if (expect_false (res < 0)) |
| 94 | { |
102 | { |
| 95 | if (errno != EINTR) |
103 | if (errno != EINTR) |
| 96 | syserr ("(libev) kevent"); |
104 | ev_syserr ("(libev) kevent"); |
| 97 | |
105 | |
| 98 | return; |
106 | return; |
| 99 | } |
107 | } |
| 100 | |
108 | |
| 101 | for (i = 0; i < res; ++i) |
109 | for (i = 0; i < res; ++i) |
| … | |
… | |
| 174 | kqueue_fork (EV_P) |
182 | kqueue_fork (EV_P) |
| 175 | { |
183 | { |
| 176 | close (backend_fd); |
184 | close (backend_fd); |
| 177 | |
185 | |
| 178 | while ((backend_fd = kqueue ()) < 0) |
186 | while ((backend_fd = kqueue ()) < 0) |
| 179 | syserr ("(libev) kqueue"); |
187 | ev_syserr ("(libev) kqueue"); |
| 180 | |
188 | |
| 181 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); |
189 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); |
| 182 | |
190 | |
| 183 | /* re-register interest in fds */ |
191 | /* re-register interest in fds */ |
| 184 | fd_rearm_all (EV_A); |
192 | fd_rearm_all (EV_A); |
