1 /*
2  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #ifndef UTILS_H
18 #define UTILS_H
19 
20 #define MIN(a, b) ((a) < (b) ? (a) : (b))
21 
22 struct imsgev {
23 	struct imsgbuf	 ibuf;
24 	void		(*handler)(int, short, void *);
25 	struct event	 ev;
26 	short		 events;
27 };
28 
29 void	*xmalloc(size_t);
30 void	*xcalloc(size_t, size_t);
31 char	*xstrdup(const char *);
32 void	*xmemdup(const void *, size_t);
33 
34 const char	*pp_msg_type(uint8_t);
35 const char	*pp_qid_type(uint8_t);
36 
37 void		hexdump(const char *, uint8_t *data, size_t len);
38 
39 void	imsg_event_add(struct imsgev *);
40 int	imsg_compose_event(struct imsgev *, uint16_t, uint32_t, pid_t,
41 	    int, const void *, uint16_t);
42 
43 #endif