1 /*
2  * This is free and unencumbered software released into the public domain.
3  *
4  * Anyone is free to copy, modify, publish, use, compile, sell, or
5  * distribute this software, either in source code form or as a compiled
6  * binary, for any purpose, commercial or non-commercial, and by any
7  * means.
8  *
9  * In jurisdictions that recognize copyright laws, the author or authors
10  * of this software dedicate any and all copyright interest in the
11  * software to the public domain. We make this dedication for the benefit
12  * of the public at large and to the detriment of our heirs and
13  * successors. We intend this dedication to be an overt act of
14  * relinquishment in perpetuity of all present and future rights to this
15  * software under copyright law.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 #include "compat.h"
27 
28 #include <sys/time.h>
29 
30 #include <assert.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <unistd.h>
34 
35 #include <poll.h>
36 
37 #include "ev.h"
38 
39 int	 fired_a;
40 int	 fired_b;
41 int	 fired_c;
42 
43 struct timeval	 tv_a = { 0, 250000 };
44 struct timeval	 tv_b = { 0, 300000 };
45 struct timeval	 tv_c = { 0, 350000 };
46 
47 unsigned long	 tout_a;
48 unsigned long	 tout_b;
49 unsigned long	 tout_c;
50 
51 static void
52 pipe_ev(int fd, int ev, void *data)
53 {
54 	warn("shouldn't have happened!");
55 	abort();
56 }
57 
58 static void
59 timeout_cb(int fd, int ev, void *data)
60 {
61 	int	*d = data;
62 
63 	assert(fd == -1);
64 	*d = 1;
65 }
66 
67 static void
68 timeout_cancel_b(int fd, int ev, void *data)
69 {
70 	timeout_cb(fd, ev, data);
71 	ev_timer_cancel(tout_b);
72 }
73 
74 static void
75 timeout_quit(int fd, int ev, void *data)
76 {
77 	timeout_cb(fd, ev, data);
78 	ev_break();
79 }
80 
81 int
82 main(void)
83 {
84 	int	 p[2];
85 
86 	alarm(2); /* safety net */
87 
88 	/* the ev subsystem needs at least a file descriptor */
89 	if (pipe(p) == -1)
90 		err(1, "pipe");
91 
92 	if (ev_init() == -1)
93 		err(1, "ev_init");
94 
95 	if (ev_add(p[0], POLLIN, pipe_ev, NULL) == -1)
96 		err(1, "ev_add");
97 
98 	if ((tout_c = ev_timer(&tv_c, timeout_quit, &fired_c)) == 0 ||
99 	    (tout_b = ev_timer(&tv_b, timeout_cb, &fired_b)) == 0 ||
100 	    (tout_a = ev_timer(&tv_a, timeout_cancel_b, &fired_a)) == 0)
101 		err(1, "ev_timer");
102 
103 	ev_loop();
104 
105 	if (fired_a && !fired_b && fired_c)
106 		return 0;
107 
108 	errx(1, "events fired not as expected: a:%d b:%d c:%d",
109 	    fired_a, fired_b, fired_c);
110 }