void ch_remove(clientHash *hashmap, int id) {
client *client = ch_get(hashmap, id);
if (client != NULL) {
cl_remove(client);
hashmap->curr_size--;
}
}
int ch_find(cpool_t *cpool, off_t offset, size_t size, chunk_t **ch) {
if (!cpool || !ch || !cpool->ht || cpool->fd < 0 ||
cpool->nr_pages > cpool->threshold) return EINVAL;
if (size == 0) {
*ch = NULL;
return 0;
}
off_t idx = (off_t) (offset / get_ch_size(1));
off_t len = (off_t) (size / get_ch_size(1) + 1);
int err = ch_get(cpool, idx, len, ch);
if (err) return err;
(*ch)->ref_cnt++;
return 0;
}
int ch_acquire(cpool_t *cpool, off_t offset, size_t size, chunk_t **ch_ptr) {
if (!cpool || !ch_ptr || !cpool->ht || cpool->fd < 0) return EINVAL;
if (size == 0) {
*ch_ptr = NULL;
return 0;
}
off_t idx = (off_t) (offset / get_ch_size(1));
off_t len = (off_t) (size / get_ch_size(1) + 1);
int err = ch_get(cpool, idx, len, ch_ptr);
chunk_t *ch = *ch_ptr;
switch(err) {
case 0:
ch->ref_cnt++;
return 0;
case ENODATA:
if (ch == NULL || !(err = cpool_del(ch)))
return ch_construct(cpool, idx, len, ch_ptr);
if (err != EBUSY) return err;
void *newpl = mremap(ch->payload, get_ch_size(ch->len), get_ch_size(idx + len - ch->idx), 0);
if (newpl != MAP_FAILED) {
ch->payload = newpl;
ch->ref_cnt++;
return 0;
} else {
if (errno != ENOMEM) return errno;
return ch_construct(cpool, idx, len, ch_ptr);
}
default:
return err;
}
}