libuev 2.4.1
io.c
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1/* libuEv - Micro event loop library
2 *
3 * Copyright (c) 2012 Flemming Madsen <flemming!madsen()madsensoft!dk>
4 * Copyright (c) 2013-2024 Joachim Wiberg <troglobit()gmail!com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25#include <errno.h>
26#include "uev.h"
27
32
44int uev_io_init(uev_ctx_t *ctx, uev_t *w, uev_cb_t *cb, void *arg, int fd, int events)
45{
46 if (fd < 0) {
47 errno = EINVAL;
48 return -1;
49 }
50
51 if (_uev_watcher_init(ctx, w, UEV_IO_TYPE, cb, arg, fd, events))
52 return -1;
53
54 return _uev_watcher_start(w);
55}
56
65int uev_io_set(uev_t *w, int fd, int events)
66{
67 if ((events & UEV_ONESHOT) && _uev_watcher_active(w))
68 return _uev_watcher_rearm(w);
69
70 /* Ignore any errors, only to clean up anything lingering ... */
71 uev_io_stop(w);
72
73 return uev_io_init(w->ctx, w, (uev_cb_t *)w->cb, w->arg, fd, events);
74}
75
83{
84 return uev_io_set(w, w->fd, w->events);
85}
86
94{
95 return _uev_watcher_stop(w);
96}
97
int uev_io_stop(uev_t *w)
Definition io.c:93
int uev_io_init(uev_ctx_t *ctx, uev_t *w, uev_cb_t *cb, void *arg, int fd, int events)
Definition io.c:44
int uev_io_start(uev_t *w)
Definition io.c:82
int uev_io_set(uev_t *w, int fd, int events)
Definition io.c:65
int fd
Definition uev.h:79
uev_ctx_t * ctx
Definition uev.h:80
struct uev_ctx uev_ctx_t
Definition uev.h:70
void uev_cb_t(uev_t *w, void *arg, int events)
Definition uev.h:97
#define UEV_ONESHOT
Definition uev.h:52
struct uev uev_t