| 1 | /* |
| 2 | * malloc.c: implementation of malloc.h |
| 3 | */ |
| 4 | |
| 5 | #include <stdlib.h> |
| 6 | #include <string.h> |
| 7 | |
| 8 | #include "malloc.h" |
| 9 | |
| 10 | extern void fatal(const char *, ...); |
| 11 | |
| 12 | void *smalloc(size_t size) { |
| 13 | void *p; |
| 14 | p = malloc(size); |
| 15 | if (!p) { |
| 16 | fatal("out of memory"); |
| 17 | } |
| 18 | return p; |
| 19 | } |
| 20 | |
| 21 | void sfree(void *p) { |
| 22 | if (p) { |
| 23 | free(p); |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | void *srealloc(void *p, size_t size) { |
| 28 | void *q; |
| 29 | if (p) { |
| 30 | q = realloc(p, size); |
| 31 | } else { |
| 32 | q = malloc(size); |
| 33 | } |
| 34 | if (!q) |
| 35 | fatal("out of memory"); |
| 36 | return q; |
| 37 | } |
| 38 | |
| 39 | char *dupstr(const char *s) { |
| 40 | char *r = smalloc(1+strlen(s)); |
| 41 | strcpy(r,s); |
| 42 | return r; |
| 43 | } |