The Tor Browser / file comparison
comparison: ipc/chromium/src/third_party/libevent/evmap-internal.h
ipc/chromium/src/third_party/libevent/evmap-internal.h
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
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| -1:000000000000 | 0:41c20f4fde10 |
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| 1 /* | |
| 2 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * 3. The name of the author may not be used to endorse or promote products | |
| 13 * derived from this software without specific prior written permission. | |
| 14 * | |
| 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 25 */ | |
| 26 #ifndef _EVMAP_H_ | |
| 27 #define _EVMAP_H_ | |
| 28 | |
| 29 /** @file evmap-internal.h | |
| 30 * | |
| 31 * An event_map is a utility structure to map each fd or signal to zero or | |
| 32 * more events. Functions to manipulate event_maps should only be used from | |
| 33 * inside libevent. They generally need to hold the lock on the corresponding | |
| 34 * event_base. | |
| 35 **/ | |
| 36 | |
| 37 struct event_base; | |
| 38 struct event; | |
| 39 | |
| 40 /** Initialize an event_map for use. | |
| 41 */ | |
| 42 void evmap_io_initmap(struct event_io_map* ctx); | |
| 43 void evmap_signal_initmap(struct event_signal_map* ctx); | |
| 44 | |
| 45 /** Remove all entries from an event_map. | |
| 46 | |
| 47 @param ctx the map to clear. | |
| 48 */ | |
| 49 void evmap_io_clear(struct event_io_map* ctx); | |
| 50 void evmap_signal_clear(struct event_signal_map* ctx); | |
| 51 | |
| 52 /** Add an IO event (some combination of EV_READ or EV_WRITE) to an | |
| 53 event_base's list of events on a given file descriptor, and tell the | |
| 54 underlying eventops about the fd if its state has changed. | |
| 55 | |
| 56 Requires that ev is not already added. | |
| 57 | |
| 58 @param base the event_base to operate on. | |
| 59 @param fd the file descriptor corresponding to ev. | |
| 60 @param ev the event to add. | |
| 61 */ | |
| 62 int evmap_io_add(struct event_base *base, evutil_socket_t fd, struct event *ev); | |
| 63 /** Remove an IO event (some combination of EV_READ or EV_WRITE) to an | |
| 64 event_base's list of events on a given file descriptor, and tell the | |
| 65 underlying eventops about the fd if its state has changed. | |
| 66 | |
| 67 @param base the event_base to operate on. | |
| 68 @param fd the file descriptor corresponding to ev. | |
| 69 @param ev the event to remove. | |
| 70 */ | |
| 71 int evmap_io_del(struct event_base *base, evutil_socket_t fd, struct event *ev); | |
| 72 /** Active the set of events waiting on an event_base for a given fd. | |
| 73 | |
| 74 @param base the event_base to operate on. | |
| 75 @param fd the file descriptor that has become active. | |
| 76 @param events a bitmask of EV_READ|EV_WRITE|EV_ET. | |
| 77 */ | |
| 78 void evmap_io_active(struct event_base *base, evutil_socket_t fd, short events); | |
| 79 | |
| 80 | |
| 81 /* These functions behave in the same way as evmap_io_*, except they work on | |
| 82 * signals rather than fds. signals use a linear map everywhere; fds use | |
| 83 * either a linear map or a hashtable. */ | |
| 84 int evmap_signal_add(struct event_base *base, int signum, struct event *ev); | |
| 85 int evmap_signal_del(struct event_base *base, int signum, struct event *ev); | |
| 86 void evmap_signal_active(struct event_base *base, evutil_socket_t signum, int ncalls); | |
| 87 | |
| 88 void *evmap_io_get_fdinfo(struct event_io_map *ctx, evutil_socket_t fd); | |
| 89 | |
| 90 void evmap_check_integrity(struct event_base *base); | |
| 91 | |
| 92 #endif /* _EVMAP_H_ */ |
