dbt_cache_p dbt_cache_get_db(str *_s)
{
dbt_cache_p _dcache=NULL;;
if(!_dbt_cachesem || !_dbt_cachedb)
{
LM_ERR("dbtext cache is not initialized! Check if you loaded"
" dbtext before any other module that uses it\n");
return NULL;
}
if(!_s || !_s->s || _s->len<=0)
return NULL;
LM_DBG("looking for db %.*s!\n",_s->len,_s->s);
lock_get(_dbt_cachesem);
_dcache = *_dbt_cachedb;
while(_dcache)
{
if(_dcache->name.len==_s->len
&& !strncasecmp(_dcache->name.s, _s->s, _s->len))
{
LM_DBG("db already cached!\n");
goto done;
}
_dcache = _dcache->next;
}
if(!dbt_is_database(_s))
{
LM_ERR("database [%.*s] does not exists!\n", _s->len, _s->s);
goto done;
}
LM_DBG("new db!\n");
_dcache = (dbt_cache_p)shm_malloc(sizeof(dbt_cache_t));
if(!_dcache)
{
LM_ERR(" no shm memory for dbt_cache_t.\n");
goto done;
}
memset(_dcache, 0, sizeof(dbt_cache_t));
_dcache->name.s = (char*)shm_malloc((_s->len+1)*sizeof(char));
if(!_dcache->name.s)
{
LM_ERR(" no shm memory for s!!\n");
shm_free(_dcache);
_dcache = NULL;
goto done;
}
memcpy(_dcache->name.s, _s->s, _s->len);
_dcache->name.s[_s->len] = '\0';
_dcache->name.len = _s->len;
if(*_dbt_cachedb)
_dcache->next = *_dbt_cachedb;
*_dbt_cachedb = _dcache;
done:
lock_release(_dbt_cachesem);
return _dcache;
}
dbt_cache_p dbt_cache_get_db(str *_s)
{
dbt_cache_p _dcache=NULL;;
if(!_cachesem || !_cachedb)
{
LOG(L_ERR, "DBT:dbt_cache_get_db:dbtext cache is not initialized!\n");
return NULL;
}
if(!_s || !_s->s || _s->len<=0)
return NULL;
DBG("DBT:dbt_cache_get_db: looking for db!\n");
lock_get(_cachesem);
_dcache = *_cachedb;
while(_dcache)
{
lock_get(&_dcache->sem);
if(_dcache->dbp)
{
if(_dcache->dbp->name.len==_s->len
&& !strncasecmp(_dcache->dbp->name.s, _s->s, _s->len))
{
lock_release(&_dcache->sem);
goto done;
}
}
lock_release(&_dcache->sem);
_dcache = _dcache->next;
}
if(!dbt_is_database(_s))
{
LOG(L_ERR, "DBT:dbt_cache_get_db: database [%.*s] does not exists!\n",
_s->len, _s->s);
goto done;
}
DBG("DBT:dbt_cache_get_db: new db!\n");
_dcache = (dbt_cache_p)shm_malloc(sizeof(dbt_cache_t));
if(!_dcache)
{
LOG(L_ERR, "DBT:dbt_cache_get_db: no memory for dbt_cache_t.\n");
goto done;
}
_dcache->dbp = (dbt_db_p)shm_malloc(sizeof(dbt_db_t));
if(!_dcache->dbp)
{
LOG(L_ERR, "DBT:dbt_cache_get_db: no memory for dbt_db_t!\n");
shm_free(_dcache);
goto done;
}
_dcache->dbp->name.s = (char*)shm_malloc(_s->len*sizeof(char));
if(!_dcache->dbp->name.s)
{
LOG(L_ERR, "DBT:dbt_cache_get_db: no memory for s!!\n");
shm_free(_dcache->dbp);
shm_free(_dcache);
_dcache = NULL;
goto done;
}
memcpy(_dcache->dbp->name.s, _s->s, _s->len);
_dcache->dbp->name.len = _s->len;
_dcache->dbp->tables = NULL;
if(!lock_init(&_dcache->sem))
{
LOG(L_ERR, "DBT:dbt_cache_get_db: no sems!\n");
shm_free(_dcache->dbp->name.s);
shm_free(_dcache->dbp);
shm_free(_dcache);
_dcache = NULL;
goto done;
}
_dcache->prev = NULL;
if(*_cachedb)
{
_dcache->next = *_cachedb;
(*_cachedb)->prev = _dcache;
}
else
_dcache->next = NULL;
*_cachedb = _dcache;
done:
lock_release(_cachesem);
return _dcache;
}
