| private CreateSession ( ) : System.Data.SqlClient.TdsParserStateObject | ||
| return | System.Data.SqlClient.TdsParserStateObject | |
internal TdsParserStateObject GetSession(object owner)
{
TdsParserStateObject session;
lock (_cache)
{
if (IsDisposed)
{
throw ADP.ClosedConnectionError();
}
else if (_freeStateObjectCount > 0)
{
// Free state object - grab it
_freeStateObjectCount--;
session = _freeStateObjects[_freeStateObjectCount];
_freeStateObjects[_freeStateObjectCount] = null;
Debug.Assert(session != null, "There was a null session in the free session list?");
}
else
{
// No free objects, create a new one
session = _parser.CreateSession();
_cache.Add(session);
_cachedCount = _cache.Count;
}
session.Activate(owner);
}
return(session);
}
internal TdsParserStateObject GetSession(object owner)
{
TdsParserStateObject session;
bool createSession = false;
lock (_cache)
{
if (IsDisposed)
{
throw ADP.ClosedConnectionError();
}
else if (_freeStateObjectCount > 0)
{
// Free state object - grab it
_freeStateObjectCount--;
session = _freeStateObjects[_freeStateObjectCount];
_freeStateObjects[_freeStateObjectCount] = null;
Debug.Assert(session != null, "There was a null session in the free session list?");
}
else
{
// No free objects, create a new on
session = null;
createSession = true;
}
}
if (createSession)
{
_parser.Connection._parserLock.Wait(canReleaseFromAnyThread: false);
try
{
session = _parser.CreateSession();
}
finally
{
_parser.Connection._parserLock.Release();
}
lock (_cache)
{
_cache.Add(session);
}
}
session.Activate(owner);
return(session);
}
internal TdsParserStateObject GetSession(object owner)
{
TdsParserStateObject session;
lock (_cache) {
if (IsDisposed)
{
throw ADP.ClosedConnectionError();
}
else if (_freeStateObjectCount > 0)
{
// Free state object - grab it
_freeStateObjectCount--;
session = _freeStateObjects[_freeStateObjectCount];
_freeStateObjects[_freeStateObjectCount] = null;
Debug.Assert(session != null, "There was a null session in the free session list?");
}
else
{
// No free objects, create a new one
session = _parser.CreateSession();
if (Bid.AdvancedOn)
{
Bid.Trace("<sc.TdsParserSessionPool.CreateSession|ADV> %d# adding session %d to pool\n", ObjectID, session.ObjectID);
}
_cache.Add(session);
_cachedCount = _cache.Count;
}
session.Activate(owner);
}
if (Bid.AdvancedOn)
{
Bid.Trace("<sc.TdsParserSessionPool.GetSession|ADV> %d# using session %d\n", ObjectID, session.ObjectID);
}
return(session);
}
