/*
* Get a connection from the pool, reuse existing
* if possible, otherwise create a new one
*/
struct flat_con* flat_get_connection(const str* dir, const str* table)
{
struct flat_id* id;
struct flat_con* ptr;
int pid;
if (!dir || !table) {
LM_ERR("invalid parameter value\n");
return 0;
}
pid = getpid();
if (pool && (pool_pid != pid)) {
LM_ERR("inherited open database connections, "
"this is not a good idea\n");
return 0;
}
pool_pid = pid;
id = new_flat_id(dir, table);
if (!id) return 0;
ptr = pool;
while (ptr) {
if (cmp_flat_id(id, ptr->id)) {
LM_DBG("connection found in the pool\n");
ptr->ref++;
free_flat_id(id);
return ptr;
}
ptr = ptr->next;
}
LM_DBG("connection not found in the pool\n");
ptr = flat_new_connection(id);
if (!ptr) {
free_flat_id(id);
return 0;
}
ptr->next = pool;
pool = ptr;
return ptr;
}
/*
* Close the connection and release memory
*/
void flat_free_connection(struct flat_con* con)
{
if (!con) return;
if (con->id) free_flat_id(con->id);
if (con->file) {
fclose(con->file);
}
pkg_free(con);
}
