// ReSharper disable PossibleInvalidOperationException
internal static void SetReplicableNull(Task?task)
{
try
{
_replicableLock.Enter();
if (!task.HasValue ||
(_replicable.HasValue && _replicable.Value.Id == task.Value.Id &&
_replicable.Value.Item == task.Value.Item))
{
_replicable = null;
}
}
finally
{
_replicableLock.Exit();
}
}
public bool DoWork(int expectedId)
{
try
{
_executionLock.Enter();
if (expectedId < _runCount)
{
return(true);
}
if (_executing == _work.Options.MaximumThreads)
{
return(false);
}
_executing++;
}
finally
{
_executionLock.Exit();
}
// associate the current task with this thread, so that Task.CurrentTask gives the correct result
Stack <Task> tasks = null;
if (!RunningTasks.TryGet(Thread.CurrentThread, out tasks))
{
tasks = new Stack <Task>();
RunningTasks.Add(Thread.CurrentThread, tasks);
}
tasks.Push(new Task(this));
// execute the task
try
{
_work.DoWork();
}
catch (Exception e)
{
if (_exceptionBuffer == null)
{
var newExceptions = new List <Exception>();
Interlocked.CompareExchange(ref _exceptionBuffer, newExceptions, null);
}
lock (_exceptionBuffer)
_exceptionBuffer.Add(e);
}
tasks.Pop();
try
{
_executionLock.Enter();
_executing--;
if (_executing == 0)
{
if (_exceptionBuffer != null)
{
_exceptions.Add(_runCount, _exceptionBuffer.ToArray());
}
// wait for all children to complete
foreach (var child in _children)
{
child.Wait();
}
_runCount++;
// open the reset event, so tasks waiting on this once can continue
_resetEvent.Set();
// wait for waiting tasks to all exit
while (_waitCount > 0)
{
;
}
if (Callback == null)
{
Requeue();
}
else
{
// if we have a callback, then queue for execution
lock (AwaitingCallbacks)
AwaitingCallbacks.Add(this);
}
return(true);
}
return(false);
}
finally
{
_executionLock.Exit();
}
}