blob: c5bbcefa913fec939d684edbe42bf4e310604ee9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
/* ISC license. */
#include <sys/types.h>
#include <stdint.h>
#include <skalibs/bitarray.h>
#include <skalibs/functypes.h>
#include <skalibs/gensetdyn.h>
uint32_t gensetdyn_iter_nocancel (gensetdyn *g, uint32_t n, iterfunc_t_ref f, void *stuff)
{
/*
XXX: we may be called by a freeing function, so we cannot alloc -
XXX: so pray that the bitarray fits in the stack.
*/
unsigned char bits[bitarray_div8(g->storage.len) ? bitarray_div8(g->storage.len) : 1] ;
size_t i = 0 ;
uint32_t j = 0 ;
uint32_t *fl = genalloc_s(uint32_t, &g->freelist) ;
size_t sp = genalloc_len(uint32_t, &g->freelist) ;
bitarray_setn(bits, 0, g->storage.len) ;
for (; i < sp ; i++) if (fl[i] < g->storage.len) bitarray_clear(bits, fl[i]) ;
for (i = 0 ; (i < g->storage.len) && (j < n) ; i++) if (bitarray_peek(bits, i))
{
j++ ;
if (!(*f)(gensetdyn_p(g, i), stuff)) break ;
}
return j ;
}
|
