int ratt_table_del_current(ratt_table_t *table)
{
RATTLOG_TRACE();
void *chunk = NULL;
chunk = ratt_table_current(table);
if (!chunk) {
debug("ratt_table_current() failed");
return FAIL;
} else if (is_frag(table->frag_mask, table->pos)) {
debug("chunk at %p already freed", chunk);
return FAIL;
}
debug("deleting chunk at %p", chunk);
memset(chunk, 0, table->chunk_size);
table->chunk_count--;
/* if chunk is the tail, move the tail back */
if (ratt_table_istail(table, chunk)
&& !ratt_table_ishead(table, chunk)) {
table->tail = (char *) chunk - table->chunk_size;
table->pos = --table->last;
debug("moved tail back to %p", table->tail);
} else /* handle fragmentation */
frag_mask_set(table->frag_mask,
table->pos, &(table->frag_count));
return OK;
}
static ActionSkBuff
filter_no_frag(arguments_t args, SkBuff b)
{
return is_frag(b) ? Drop(b) : Pass(b);
}
static bool
pred_is_frag(arguments_t args, SkBuff b)
{
return is_frag(b);
}
