mirror of
https://github.com/adulau/ssldump.git
synced 2024-10-29 23:56:23 +00:00
96 lines
1.6 KiB
C
96 lines
1.6 KiB
C
/**
|
|
r_bitfield.c
|
|
|
|
Copyright (C) 2001 RTFM, Inc.
|
|
All Rights Reserved.
|
|
|
|
ekr@rtfm.com Wed Oct 3 11:15:23 2001
|
|
*/
|
|
|
|
#include <r_common.h>
|
|
#include "r_bitfield.h"
|
|
|
|
int r_bitfield_create(r_bitfield **setp, UINT4 size) {
|
|
r_bitfield *set = 0;
|
|
int _status;
|
|
int num_words = size / 32 + !!(size % 32);
|
|
|
|
if(!(set = (r_bitfield *)RMALLOC(sizeof(r_bitfield))))
|
|
ABORT(R_NO_MEMORY);
|
|
|
|
if(!(set->data = (UINT4 *)RMALLOC(num_words * 4)))
|
|
ABORT(R_NO_MEMORY);
|
|
memset(set->data, 0, 4 * num_words);
|
|
|
|
set->base = 0;
|
|
set->len = num_words;
|
|
|
|
*setp = set;
|
|
|
|
_status = 0;
|
|
abort:
|
|
if(_status) {
|
|
r_bitfield_destroy(&set);
|
|
}
|
|
return _status;
|
|
}
|
|
|
|
int r_bitfield_destroy(r_bitfield **setp) {
|
|
r_bitfield *set;
|
|
|
|
if(!setp || !*setp)
|
|
return 0;
|
|
|
|
set = *setp;
|
|
|
|
RFREE(set->data);
|
|
RFREE(set);
|
|
|
|
*setp = 0;
|
|
return 0;
|
|
}
|
|
|
|
int r_bitfield_set(r_bitfield *set, int bit) {
|
|
int word = (bit - set->base) / 32;
|
|
int bbit = (bit - set->base) % 32;
|
|
int _status;
|
|
|
|
/* Resize? */
|
|
if(word > set->len) {
|
|
UINT4 newlen = set->len;
|
|
UINT4 *tmp;
|
|
|
|
while(newlen < word)
|
|
newlen *= 2;
|
|
|
|
if(!(tmp = (UINT4 *)RMALLOC(newlen)))
|
|
ABORT(R_NO_MEMORY);
|
|
|
|
memcpy(tmp, set->data, set->len * 4);
|
|
memset(tmp + set->len * 4, 0, (newlen - set->len) * 4);
|
|
|
|
RFREE(set->data);
|
|
set->data = tmp;
|
|
}
|
|
|
|
set->data[word] |= 1 << bbit;
|
|
|
|
_status = 0;
|
|
abort:
|
|
return _status;
|
|
}
|
|
|
|
int r_bitfield_isset(r_bitfield *set, int bit) {
|
|
int word = (bit - set->base) / 32;
|
|
int bbit = (bit - set->base) % 32;
|
|
int _status;
|
|
|
|
if(bit < set->base)
|
|
return 0;
|
|
|
|
/* Resize? */
|
|
if(word > set->len)
|
|
return 0;
|
|
|
|
return set->data[word] & (1 << bbit);
|
|
}
|