public void StartExecution(EventWaitHandle wainHandle = null)
{
ExecutionException = null;
if (ThreadPool == null)
{
foreach (Action action in mActionGroups.SelectMany(ag => ag))
{
action();
}
}
else
{
List <List <Action> > actionGroups = mActionGroups.ToList();
if (wainHandle != null)
{
actionGroups.Add(new List <Action> {
() => { try { wainHandle.Set(); } catch { } }
});
}
IWorkItemsGroup[] wigs = actionGroups.Select(ag => ThreadPool.CreateWorkItemsGroup(ag.Count, new WIGStartInfo
{
WorkItemPriority = WorkItemPriority
})).ToArray();
// make wig chain via on-idle event
for (int i = wigs.Length - 2; i >= 0; i--)
{
int j = i + 1;
wigs[i].OnIdle += g =>
{
if (ExecutionException == null)
{
QueueWorkItems(wigs[j], actionGroups[j]);
}
else
{
if (wainHandle != null)
{
try { wainHandle.Set(); } catch { }
}
}
};
}
// start off by running first member of the chain
QueueWorkItems(wigs[0], actionGroups[0]);
}
}