/// <summary>
/// Sets the max parallelism for the given queue
/// </summary>
public void SetMaxParallelDegreeByKind(DispatcherKind kind, int maxParallelDegree)
{
if (m_queuesByKind[kind].AdjustParallelDegree(maxParallelDegree) && maxParallelDegree > 0)
{
TriggerDispatcher();
}
}
internal void Dequeued()
{
if (m_currentQueue != DispatcherKind.None)
{
var duration = DateTime.UtcNow - m_queueEnterTime;
QueueDurations.Value[(int)m_currentQueue] += duration;
m_currentQueue = DispatcherKind.None;
}
}
/// <summary>
/// Sets the max parallelism for the given queue
/// </summary>
public void SetMaxParallelDegreeByKind(DispatcherKind kind, int maxParallelDegree)
{
if (maxParallelDegree == 0)
{
// We only allow 0 for ChooseWorkerCpu and ChooseWorkerCacheLookup dispatchers.
// For all other dispatchers, 0 is not allowed for potential deadlocks.
if (!kind.IsChooseWorker())
{
maxParallelDegree = 1;
}
}
if (m_queuesByKind[kind].AdjustParallelDegree(maxParallelDegree) && maxParallelDegree > 0)
{
TriggerDispatcher();
}
}
internal void Dequeued(bool hasWaitedForMaterializeOutputsInBackground)
{
if (m_currentQueue != DispatcherKind.None)
{
var duration = DateTime.UtcNow - m_queueEnterTime;
if (hasWaitedForMaterializeOutputsInBackground)
{
QueueWaitDurationForMaterializeOutputsInBackground = duration;
}
else
{
QueueDurations.Value[(int)m_currentQueue] += duration;
}
m_currentQueue = DispatcherKind.None;
}
}
protected ChooseWorkerContext(
LoggingContext loggingContext,
IReadOnlyList <Worker> workers,
IPipQueue pipQueue,
DispatcherKind kind,
int maxParallelDegree)
{
Workers = workers;
PipQueue = pipQueue;
LocalWorker = (LocalWorker)workers[0];
LoggingContext = loggingContext;
Kind = kind;
MaxParallelDegree = maxParallelDegree;
foreach (var worker in Workers)
{
worker.ResourcesChanged += OnWorkerResourcesChanged;
}
}
internal void Enqueued(DispatcherKind kind)
{
m_currentQueue = kind;
m_queueEnterTime = DateTime.UtcNow;
}
/// <inheritdoc/> public int GetMaxParallelDegreeByKind(DispatcherKind queueKind) => m_innerQueue.GetMaxParallelDegreeByKind(queueKind);
/// <inheritdoc/> public void SetMaxParallelDegreeByKind(DispatcherKind queueKind, int maxParallelDegree) => m_innerQueue.SetMaxParallelDegreeByKind(queueKind, maxParallelDegree);
/// <inheritdoc/> public int GetNumQueuedByKind(DispatcherKind queueKind) => m_innerQueue.GetNumQueuedByKind(queueKind);
internal void UnpauseChooseWorkerQueueIfEnqueuingNewPip(RunnablePip runnablePip, DispatcherKind nextQueue)
{
// If enqueuing a new highest priority pip to queue
if (nextQueue == DispatcherKind.ChooseWorkerCpu)
{
if (runnablePip != m_lastIterationBlockedPip)
{
TogglePauseChooseWorkerQueue(pause: false);
}
// Capture the sequence number which will be used to compare if ChooseWorker queue is paused
// waiting for resources for this pip to avoid race conditions where pip cannot acquire worker
// resources become available then queue is paused potentially indefinitely (not likely but theoretically
// possilbe)
runnablePip.ChooseWorkerSequenceNumber = Volatile.Read(ref WorkerEnableSequenceNumber);
}
}
/// <inheritdoc/> public int GetMaxParallelDegreeByKind(DispatcherKind kind) => m_queuesByKind[kind].MaxParallelDegree;
/// <inheritdoc/> public int GetNumQueuedByKind(DispatcherKind kind) => m_queuesByKind[kind].NumQueued;
/// <inheritdoc/> public int GetNumRunningByKind(DispatcherKind kind) => m_queuesByKind[kind].NumRunning;
/// <inheritdoc/> public bool IsUseWeightByKind(DispatcherKind kind) => m_queuesByKind[kind].UseWeight;
/// <inheritdoc/> public int GetNumAcquiredSlotsByKind(DispatcherKind kind) => m_queuesByKind[kind].NumAcquiredSlots;
/// <summary>
/// Whether this dispatcher represents a logic for choosing a worker.
/// </summary>
public static bool IsChooseWorker(this DispatcherKind kind)
{
return(kind == DispatcherKind.ChooseWorkerLight || kind == DispatcherKind.ChooseWorkerCacheLookup || kind == DispatcherKind.ChooseWorkerCpu);
}
