int PurgeLWSessionCache(Stream5SessionCache *sessionCache)
{
int retCount = 0;
Stream5LWSession *idx;
SFXHASH_NODE *hnode;
if (!sessionCache)
return 0;
/* Remove all sessions from the hash table. */
hnode = sfxhash_mru_node(sessionCache->hashTable);
while (hnode)
{
idx = (Stream5LWSession *)hnode->data;
if (!idx)
{
sfxhash_free_node(sessionCache->hashTable, hnode);
}
else
{
idx->session_flags |= SSNFLAG_PRUNED;
DeleteLWSession(sessionCache, idx);
}
hnode = sfxhash_mru_node(sessionCache->hashTable);
retCount++;
}
return retCount;
}
int PruneLWSessionCache(Stream5SessionCache *sessionCache,
uint32_t thetime,
Stream5LWSession *save_me,
int memCheck)
{
Stream5LWSession *idx;
uint32_t pruned = 0;
if (thetime != 0)
{
/* Pruning, look for sessions that have time'd out */
char got_one;
idx = (Stream5LWSession *) sfxhash_lru(sessionCache->hashTable);
if(idx == NULL)
{
return 0;
}
do
{
got_one = 0;
if(idx == save_me)
{
SFXHASH_NODE *lastNode = sfxhash_lru_node(sessionCache->hashTable);
sfxhash_gmovetofront(sessionCache->hashTable, lastNode);
lastNode = sfxhash_lru_node(sessionCache->hashTable);
if ((lastNode) && (lastNode->data != idx))
{
idx = (Stream5LWSession *)lastNode->data;
continue;
}
else
{
sessionCache->prunes += pruned;
return pruned;
}
}
if((idx->last_data_seen+sessionCache->timeout) < thetime)
{
Stream5LWSession *savidx = idx;
if(sfxhash_count(sessionCache->hashTable) > 1)
{
DEBUG_WRAP(DebugMessage(DEBUG_STREAM, "pruning stale session\n"););
savidx->session_flags |= SSNFLAG_TIMEDOUT;
DeleteLWSession(sessionCache, savidx, "stale/timeout");
idx = (Stream5LWSession *) sfxhash_lru(sessionCache->hashTable);
pruned++;
got_one = 1;
}