1 |
greg |
1.2 |
/* Copyright 1988 Regents of the University of California */ |
2 |
greg |
1.1 |
|
3 |
|
|
#ifndef lint |
4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
|
#endif |
6 |
greg |
1.2 |
|
7 |
|
|
/* |
8 |
greg |
1.1 |
* ealloc.c - memory routines which call quit on error. |
9 |
|
|
*/ |
10 |
|
|
|
11 |
|
|
|
12 |
|
|
#include <stdio.h> |
13 |
|
|
|
14 |
|
|
|
15 |
|
|
char *malloc(), *realloc(), *emalloc(), *ecalloc(), *erealloc(); |
16 |
|
|
|
17 |
|
|
|
18 |
|
|
char * |
19 |
|
|
emalloc(n) /* return pointer to n uninitialized bytes */ |
20 |
|
|
unsigned n; |
21 |
|
|
{ |
22 |
|
|
register char *cp; |
23 |
|
|
|
24 |
|
|
if (n == 0) |
25 |
|
|
return(NULL); |
26 |
|
|
|
27 |
|
|
if ((cp = malloc(n)) != NULL) |
28 |
|
|
return(cp); |
29 |
|
|
|
30 |
|
|
eputs("Out of memory in emalloc\n"); |
31 |
|
|
quit(1); |
32 |
|
|
} |
33 |
|
|
|
34 |
|
|
|
35 |
|
|
char * |
36 |
|
|
ecalloc(ne, es) /* return pointer to initialized memory */ |
37 |
|
|
register unsigned ne; |
38 |
|
|
unsigned es; |
39 |
|
|
{ |
40 |
|
|
register char *cp; |
41 |
|
|
|
42 |
|
|
ne *= es; |
43 |
|
|
if (ne == 0) |
44 |
|
|
return(NULL); |
45 |
|
|
|
46 |
|
|
if ((cp = malloc(ne)) == NULL) { |
47 |
|
|
eputs("Out of memory in ecalloc\n"); |
48 |
|
|
quit(1); |
49 |
|
|
} |
50 |
|
|
cp += ne; |
51 |
|
|
while (ne--) |
52 |
|
|
*--cp = 0; |
53 |
|
|
return(cp); |
54 |
|
|
} |
55 |
|
|
|
56 |
|
|
|
57 |
|
|
char * |
58 |
|
|
erealloc(cp, n) /* reallocate cp to size n */ |
59 |
|
|
register char *cp; |
60 |
|
|
unsigned n; |
61 |
|
|
{ |
62 |
|
|
if (n == 0) { |
63 |
|
|
if (cp != NULL) |
64 |
|
|
free(cp); |
65 |
|
|
return(NULL); |
66 |
|
|
} |
67 |
|
|
|
68 |
|
|
if (cp == NULL) |
69 |
|
|
cp = malloc(n); |
70 |
|
|
else |
71 |
|
|
cp = realloc(cp, n); |
72 |
|
|
|
73 |
|
|
if (cp != NULL) |
74 |
|
|
return(cp); |
75 |
|
|
|
76 |
|
|
eputs("Out of memory in erealloc\n"); |
77 |
|
|
quit(1); |
78 |
|
|
} |
79 |
|
|
|
80 |
|
|
|
81 |
|
|
efree(cp) /* free memory allocated by above */ |
82 |
|
|
char *cp; |
83 |
|
|
{ |
84 |
|
|
free(cp); |
85 |
|
|
} |