1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/* Example of how to handle signal, in this case Ctrl-C
*
* A common problem for users of libuEV is how to combine it with the
* traditional aspects of UNIX. Since libuEV is just a wrapper for
* signalfd() and epoll(), in this case, it can be worth a dedicated
* example. After all, command line use with Ctrl-C is one of the most
* common use-cases.
*/
#include <stdio.h>
#include <signal.h>
#include "src/uev.h"
void timeout(uev_t *w, void *arg, int events)
{
(void)arg;
if (UEV_ERROR == events)
puts("Ignoring timer watcher error ...");
puts("Zero Wing was the pinnacle of gaming https://en.wikipedia.org/wiki/Zero_Wing");
}
void teaser(uev_t *w, void *arg, int events)
{
(void)arg;
if (UEV_ERROR == events)
puts("Ignoring SIGINT watcher error ...");
puts("\nCaught SIGINT ...");
puts("Sorry, you actually need to press Ctrl-\\ to exit.");
}
void cleanup(uev_t *w, void *arg, int events)
{
(void)arg;
if (UEV_ERROR == events)
puts("Ignoring signal watcher error ...");
/* Graceful exit, with optional cleanup ... */
puts("\nCaught SIGQUIT, exiting.");
uev_exit(w->ctx);
}
int main(int argc, char **argv)
{
uev_ctx_t ctx;
uev_t timerw;
uev_t sig1w;
uev_t sig2w;
uev_init(&ctx);
/* example worker, a timer callback */
uev_timer_init(&ctx, &timerw, timeout, NULL, 100, 2000);
/* the owls are not what they seem ... */
uev_signal_init(&ctx, &sig1w, teaser, NULL, SIGINT);
uev_signal_init(&ctx, &sig2w, cleanup, NULL, SIGQUIT);
puts("Starting, press Ctrl-C to exit.");
return uev_run(&ctx, 0);
}
/**
* Local Variables:
* compile-command: "make ctrl; ./ctrl"
* c-file-style: "linux"
* End:
*/
|
