// Loop to run on thread
private void ProcessBackgroundQueueOnThread()
{
while (!ForceSingleThreaded)
{
if (Paused)
{
Thread.Sleep(PausedSleepMS);
continue;
}
AsyncWorkUnit unit = null;
lock (m_LockObject)
{
if (m_BackgroundQueue.Count > 0)
{
unit = m_BackgroundQueue.Peek();
}
}
if (unit == null)
{
Thread.Sleep(StarvationSleepMS);
continue;
}
AsyncWorkUnit.StepResult result = AsyncWorkUnit.StepResult.Incomplete;
while (result.IsIncomplete() && !ForceSingleThreaded && !Paused)
{
result = unit.ThreadedStep();
if (result.TickDelay > 0)
{
Thread.Sleep(TimeSpan.FromTicks(result.TickDelay));
}
}
if (!result.IsIncomplete())
{
if (result.Type == AsyncWorkUnit.StepResultType.Complete)
{
m_Scheduler.Log("Completed {0}", unit);
}
lock (m_LockObject)
{
m_BackgroundQueue.Dequeue();
}
m_Scheduler.FreeUnit(unit);
}
}
lock (m_LockObject)
{
m_Thread = null;
}
}
// Processes scheduled work by time-slicing.
private void ProcessBlockingQueue(Stopwatch inStopwatch, long inTotalBudget, long inSliceBudget, Queue <AsyncWorkUnit> ioQueue, bool inbCheckThread, ref long ioTicksRemaining)
{
#if SUPPORTS_THREADING
if (inbCheckThread)
{
// if we have a running thread, don't process this frame
lock (m_LockObject)
{
if (m_Thread != null)
{
ioTicksRemaining = inTotalBudget - inStopwatch.ElapsedTicks;
return;
}
}
}
#endif // SUPPORTS_THREADING
if (m_NextBlockingTick > 0)
{
long current = Stopwatch.GetTimestamp();
if (current < m_NextBlockingTick)
{
ioTicksRemaining = inTotalBudget - inStopwatch.ElapsedTicks;
return;
}
m_NextBlockingTick = 0;
}
long timestamp = inStopwatch.ElapsedTicks;
long cutoff = timestamp + inSliceBudget;
while (!Paused && ioTicksRemaining > 0 && ioQueue.Count > 0 && timestamp < cutoff && m_NextBlockingTick <= 0)
{
AsyncWorkUnit unit = ioQueue.Peek();
AsyncWorkUnit.StepResult result = AsyncWorkUnit.StepResult.Incomplete;
while (result.IsIncomplete() && ioTicksRemaining > 0 && !Paused && timestamp < cutoff && m_NextBlockingTick <= 0)
{
result = unit.Step();
if (result.TickDelay > 0)
{
m_NextBlockingTick = Stopwatch.GetTimestamp() + result.TickDelay;
}
timestamp = inStopwatch.ElapsedTicks;
ioTicksRemaining = inTotalBudget - timestamp;
}
if (!result.IsIncomplete())
{
if (result.Type == AsyncWorkUnit.StepResultType.Complete)
{
m_Scheduler.Log("Completed {0}", unit);
}
ioQueue.Dequeue();
m_Scheduler.FreeUnit(unit);
timestamp = inStopwatch.ElapsedTicks;
ioTicksRemaining = inTotalBudget - timestamp;
}
}
}
