1/*
 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
 3 * See LICENSE file for license details.
 4 */
 5
 6#include <stdarg.h>
 7#include <stdio.h>
 8#include <stdlib.h>
 9#include <string.h>
10
11void
12error(char *errstr, ...) {
13	va_list ap;
14	va_start(ap, errstr);
15	vfprintf(stderr, errstr, ap);
16	va_end(ap);
17	exit(1);
18}
19
20static void
21bad_malloc(unsigned int size)
22{
23	fprintf(stderr, "fatal: could not malloc() %d bytes\n",
24			(int) size);
25	exit(1);
26}
27
28void *
29emallocz(unsigned int size)
30{
31	void *res = calloc(1, size);
32	if(!res)
33		bad_malloc(size);
34	return res;
35}
36
37void *
38emalloc(unsigned int size)
39{
40	void *res = malloc(size);
41	if(!res)
42		bad_malloc(size);
43	return res;
44}
45
46void *
47erealloc(void *ptr, unsigned int size)
48{
49	void *res = realloc(ptr, size);
50	if(!res)
51		bad_malloc(size);
52	return res;
53}
54
55char *
56estrdup(const char *str)
57{
58	void *res = strdup(str);
59	if(!res)
60		bad_malloc(strlen(str));
61	return res;
62}
63
64void
65failed_assert(char *a, char *file, int line)
66{
67	fprintf(stderr, "Assertion \"%s\" failed at %s:%d\n", a, file, line);
68	abort();
69}
70
71void
72swap(void **p1, void **p2)
73{
74	void *tmp = *p1;
75	*p1 = *p2;
76	*p2 = tmp;
77}