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proper intfilter expansion, vec improvements

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This commit is contained in:
cathugger 2017-10-09 20:00:02 +00:00
parent 7a090d9ea6
commit d8c8fba4d2
4 changed files with 111 additions and 52 deletions
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48
vec.c Normal file
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@ -0,0 +1,48 @@
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
#include "vec.h"
void vec_add1(struct vec_basestruct *ctl,size_t sz)
{
if (!ctl->alen) {
ctl->alen = 8;
if (SIZE_MAX / 8 < sz)
ctl->alen = 1;
ctl->buf = malloc(ctl->alen * sz);
if (!ctl->buf)
abort();
} else if (ctl->len >= ctl->alen) {
ctl->alen *= 2;
if (SIZE_MAX / ctl->alen < sz)
abort();
ctl->buf = realloc(ctl->buf,ctl->alen * sz);
if (!ctl->buf)
abort();
}
++ctl->len;
}
void vec_addn(struct vec_basestruct *ctl,size_t sz,size_t n)
{
if (!ctl->alen)
ctl->alen = 8;
size_t nlen = ctl->alen;
ctl->len += n;
while (ctl->len > nlen)
nlen *= 2;
if (nlen > ctl->alen) {
ctl->alen = nlen;
if (SIZE_MAX / nlen < sz)
abort();
ctl->buf = realloc(ctl->buf,nlen * sz);
if (!ctl->buf)
abort();
} else if (!ctl->buf) {
if (SIZE_MAX / ctl->alen < sz)
abort();
ctl->buf = malloc(ctl->alen * sz);
if (!ctl->buf)
abort();
}
}