/// <summary>
/// Yields the current program to the debugger if a breakpoint or break condition is satisfied.
/// </summary>
public void Yield(ServerProcess process, PlanNode node)
{
if (!process.IsLoading())
{
try
{
Monitor.Enter(_syncHandle);
try
{
if (ShouldBreak(process, node))
{
_brokenProcesses.Add(process);
InternalPause();
}
while (_isPauseRequested && _processes.Contains(process))
{
_pausedCount++;
Monitor.Exit(_syncHandle);
try
{
#if !SILVERLIGHT
WaitHandle.SignalAndWait(_waitSignal, _pauseSignal);
#endif
}
finally
{
Monitor.Enter(_syncHandle);
_pausedCount--;
}
}
}
finally
{
Monitor.Exit(_syncHandle);
}
}
catch
{
// Do nothing, no error should ever be thrown from here
}
}
}
protected override object InternalExecute(Program program, PlanNode planNode)
{
if ((planNode is BaseTableVarNode) || (planNode is OrderNode))
{
Schema.TableVar tableVar = null;
if (planNode is BaseTableVarNode)
{
tableVar = ((BaseTableVarNode)planNode).TableVar;
}
else if (planNode is OrderNode)
{
tableVar = ((BaseTableVarNode)planNode.Nodes[0]).TableVar;
}
if (tableVar != null)
{
Device.LoadTable(ServerProcess, tableVar);
}
}
object result = base.InternalExecute(program, planNode);
if (planNode is CreateTableNode)
{
Schema.TableVar tableVar = ((CreateTableNode)planNode).Table;
SimpleDeviceHeader header = new SimpleDeviceHeader(tableVar, 0);
Device.Headers.Add(header);
if (!ServerProcess.IsLoading() && ((Device.ReconcileMode & ReconcileMode.Command) != 0))
{
string fileName = Device.GetTableVarFileName(tableVar);
if (File.Exists(fileName))
{
File.Delete(fileName);
}
}
}
else if (planNode is DropTableNode)
{
Device.Headers.Remove(((DropTableNode)planNode).Table);
}
return(result);
}
public bool IsLoading()
{
return(_serverProcess.IsLoading());
}