| … | |
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| 4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 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 | * |
| 10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
| 12 | * |
12 | * |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
| 19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
| 21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| … | |
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| 141 | static void |
141 | static void |
| 142 | epoll_poll (EV_P_ ev_tstamp timeout) |
142 | epoll_poll (EV_P_ ev_tstamp timeout) |
| 143 | { |
143 | { |
| 144 | int i; |
144 | int i; |
| 145 | int eventcnt; |
145 | int eventcnt; |
| 146 | |
146 | |
| 147 | /* epoll wait times cannot be larger than (LONG_MAX - 999UL) / HZ msecs, which is below */ |
147 | /* epoll wait times cannot be larger than (LONG_MAX - 999UL) / HZ msecs, which is below */ |
| 148 | /* the default libev max wait time, however. */ |
148 | /* the default libev max wait time, however. */ |
| 149 | EV_RELEASE_CB; |
149 | EV_RELEASE_CB; |
| 150 | eventcnt = epoll_wait (backend_fd, epoll_events, epoll_eventmax, (int)ceil (timeout * 1000.)); |
150 | eventcnt = epoll_wait (backend_fd, epoll_events, epoll_eventmax, |
|
|
151 | epoll_epermcnt ? 0 : ev_timeout_to_ms (timeout)); |
| 151 | EV_ACQUIRE_CB; |
152 | EV_ACQUIRE_CB; |
| 152 | |
153 | |
| 153 | if (expect_false (eventcnt < 0)) |
154 | if (expect_false (eventcnt < 0)) |
| 154 | { |
155 | { |
| 155 | if (errno != EINTR) |
156 | if (errno != EINTR) |
| … | |
… | |
| 231 | if (backend_fd < 0) |
232 | if (backend_fd < 0) |
| 232 | return 0; |
233 | return 0; |
| 233 | |
234 | |
| 234 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); |
235 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); |
| 235 | |
236 | |
| 236 | backend_fudge = 0.; /* kernel sources seem to indicate this to be zero */ |
237 | backend_fudge = 1./1024.; /* epoll does sometimes return early, this is just to avoid the worst */ |
| 237 | backend_modify = epoll_modify; |
238 | backend_modify = epoll_modify; |
| 238 | backend_poll = epoll_poll; |
239 | backend_poll = epoll_poll; |
| 239 | |
240 | |
| 240 | epoll_eventmax = 64; /* initial number of events receivable per poll */ |
241 | epoll_eventmax = 64; /* initial number of events receivable per poll */ |
| 241 | epoll_events = (struct epoll_event *)ev_malloc (sizeof (struct epoll_event) * epoll_eventmax); |
242 | epoll_events = (struct epoll_event *)ev_malloc (sizeof (struct epoll_event) * epoll_eventmax); |
