private bool AcquireLocks(System.Workflow.ComponentModel.Activity activity)
{
ICollection <string> allSynchronizationHandles = this.GetAllSynchronizationHandles(activity);
if ((allSynchronizationHandles != null) && (allSynchronizationHandles.Count != 0))
{
for (System.Workflow.ComponentModel.Activity activity2 = activity.Parent; activity2 != null; activity2 = activity2.Parent)
{
if (activity2.SupportsSynchronization || (activity2.Parent == null))
{
Dictionary <string, GrantedLock> dictionary = (Dictionary <string, GrantedLock>)activity2.GetValue(GrantedLocksProperty);
if (dictionary == null)
{
dictionary = new Dictionary <string, GrantedLock>();
activity2.SetValue(GrantedLocksProperty, dictionary);
}
foreach (string str in allSynchronizationHandles)
{
bool flag = true;
if (!dictionary.ContainsKey(str))
{
dictionary[str] = new GrantedLock(activity);
}
else if (dictionary[str].Holder != activity)
{
dictionary[str].WaitList.Add(activity);
flag = false;
}
if (!flag)
{
return(false);
}
}
}
ICollection <string> is3 = (ICollection <string>)activity2.GetValue(System.Workflow.ComponentModel.Activity.SynchronizationHandlesProperty);
if ((is3 != null) && (is3.Count != 0))
{
break;
}
}
}
return(true);
}
private ICollection <string> GetAllSynchronizationHandles(System.Workflow.ComponentModel.Activity activity)
{
WalkerEventHandler handler = null;
ICollection <string> is2 = (ICollection <string>)activity.GetValue(System.Workflow.ComponentModel.Activity.SynchronizationHandlesProperty);
if ((is2 == null) || (is2.Count == 0))
{
return(is2);
}
List <string> handles = new List <string>(is2);
if (activity is CompositeActivity)
{
Walker walker = new Walker();
if (handler == null)
{
handler = delegate(Walker w, WalkerEventArgs e) {
if (e.CurrentActivity != activity)
{
ICollection <string> collection = (ICollection <string>)e.CurrentActivity.GetValue(System.Workflow.ComponentModel.Activity.SynchronizationHandlesProperty);
if (collection != null)
{
handles.AddRange(collection);
}
}
};
}
walker.FoundActivity += handler;
walker.Walk(activity);
}
handles.Sort();
for (int i = 1; i < handles.Count; i++)
{
if (handles[i] == handles[i - 1])
{
handles.RemoveAt(--i);
}
}
handles.TrimExcess();
return(handles);
}
internal void ReleaseLocks(bool transactional)
{
if (this.currentActivity == null)
{
throw new ObjectDisposedException("ActivityExecutionContext");
}
this.Activity.RemoveProperty(LockAcquiredCallbackProperty);
ICollection <string> allSynchronizationHandles = this.GetAllSynchronizationHandles(this.Activity);
if ((allSynchronizationHandles != null) && (allSynchronizationHandles.Count != 0))
{
List <System.Workflow.ComponentModel.Activity> list = new List <System.Workflow.ComponentModel.Activity>();
for (System.Workflow.ComponentModel.Activity activity = this.Activity.Parent; activity != null; activity = activity.Parent)
{
if (activity.SupportsSynchronization || (activity.Parent == null))
{
Dictionary <string, GrantedLock> dictionary = (Dictionary <string, GrantedLock>)activity.GetValue(GrantedLocksProperty);
if (transactional)
{
Dictionary <string, GrantedLock> dictionary2 = new Dictionary <string, GrantedLock>();
if (dictionary != null)
{
foreach (KeyValuePair <string, GrantedLock> pair in dictionary)
{
dictionary2.Add(pair.Key, (GrantedLock)pair.Value.Clone());
}
}
activity.SetValue(CachedGrantedLocksProperty, dictionary2);
}
if (dictionary != null)
{
foreach (string str in allSynchronizationHandles)
{
if (dictionary.ContainsKey(str))
{
if (dictionary[str].WaitList.Count == 0)
{
dictionary.Remove(str);
}
else if (dictionary[str].Holder != this.Activity)
{
dictionary[str].WaitList.Remove(this.Activity);
}
else
{
System.Workflow.ComponentModel.Activity item = dictionary[str].WaitList[0];
dictionary[str].WaitList.RemoveAt(0);
dictionary[str].Holder = item;
if (!list.Contains(item))
{
list.Add(item);
}
}
}
}
if (dictionary.Count == 0)
{
activity.RemoveProperty(GrantedLocksProperty);
}
}
}
ICollection <string> is3 = (ICollection <string>)activity.GetValue(System.Workflow.ComponentModel.Activity.SynchronizationHandlesProperty);
if ((is3 != null) && (is3.Count != 0))
{
break;
}
}
foreach (System.Workflow.ComponentModel.Activity activity3 in list)
{
if (this.AcquireLocks(activity3))
{
((ActivityExecutorDelegateInfo <EventArgs>)activity3.GetValue(LockAcquiredCallbackProperty)).InvokeDelegate(this.Activity.ContextActivity, EventArgs.Empty, false, transactional);
}
}
}
}