/// <summary>
/// +/- blocking
/// </summary>
/// <param name="nextAction"></param>
public void Close(Action nextAction = null)
{
//-------------------------------------------------
switch (_execState)
{
//can close twice without error
case QueryExecState.Terminated:
return; //***
case QueryExecState.Closed:
nextAction?.Invoke();
return; //***
case QueryExecState.Closing:
#if DEBUG
throw new Exception("conn is closing ...");
#else
return;
#endif
}
//first ***
_execState = QueryExecState.Closing;
//-------------------------------------------------
if (_conn != null && _conn.WaitingTerminated)
{
//something err
if (nextAction != null)
{
}
return;
}
if (nextAction == null)
{
//blocking***
_sqlParserMx.UseFlushMode(true);
//wait where
//TODO: review here *** tight loop
while (!_recvComplete)
{
//wait
if (_conn.WaitingTerminated)
{
return;//don't do the rest
}
//TODO: review here *** tight loop
System.Threading.Thread.Sleep(0);
}
;
_sqlParserMx.UseFlushMode(false); //switch back//
//blocking
if (_prepareContext != null)
{
_conn.InitWait();
ClosePrepareStmt_A(_conn.UnWait);
if (!_conn.Wait())
{
//handle wait timeout
_execState = QueryExecState.Terminated;
_conn.BindingQuery = null;//release
_conn = null;
return;
}
}
_execState = QueryExecState.Closed;
_conn.BindingQuery = null;//release
_conn = null;
}
else
{
//non blocking***
if (!_recvComplete)
{
_sqlParserMx.UseFlushMode(true);
MonitorWhenRecvComplete(() =>
{
_sqlParserMx.UseFlushMode(false);
if (_prepareContext != null)
{
ClosePrepareStmt_A(() =>
{
_execState = QueryExecState.Closed;
_conn.BindingQuery = null;//release
_conn = null;
nextAction();
});
}
else
{
_execState = QueryExecState.Closed;
_conn.BindingQuery = null;//release
_conn = null;
nextAction();
}
});
}
else
{
if (_prepareContext != null)
{
ClosePrepareStmt_A(() =>
{
_execState = QueryExecState.Closed;
_conn.BindingQuery = null;//release
_conn = null;
nextAction();
});
}
else
{
_execState = QueryExecState.Closed;
_conn.BindingQuery = null;//release
_conn = null;
nextAction();
}
}
}
}
/// <summary>
/// +/- blocking
/// </summary>
/// <param name="nextAction"></param>
public void Close(Action nextAction = null)
{
//-------------------------------------------------
switch (_execState)
{
//can close twice without error
case QueryExecState.Closed:
if (nextAction != null)
{
nextAction();
}
return; //***
case QueryExecState.Closing:
throw new Exception("conn is closing ...");
}
//first ***
_execState = QueryExecState.Closing;
//-------------------------------------------------
if (nextAction == null)
{
//blocking
_sqlParserMx.UseFlushMode(true);
//wait where
//TODO: review here *** tight loop
while (!_recvComplete)
{
;
}
_sqlParserMx.UseFlushMode(false); //switch back//
//blocking
if (_prepareContext != null)
{
_conn.InitWait();
ClosePrepareStmt_A(_conn.UnWait);
_conn.Wait();
}
_execState = QueryExecState.Closed;
}
else
{
//non blocking
if (!_recvComplete)
{
_sqlParserMx.UseFlushMode(true);
MonitorWhenRecvComplete(() =>
{
_sqlParserMx.UseFlushMode(false);
if (_prepareContext != null)
{
ClosePrepareStmt_A(nextAction);
}
else
{
_execState = QueryExecState.Closed;
nextAction();
}
});
}
else
{
if (_prepareContext != null)
{
ClosePrepareStmt_A(nextAction);
}
else
{
_execState = QueryExecState.Closed;
nextAction();
}
}
}
}
