/// <summary>
/// Return the next available ExecutorId.
/// For an executor to be available the following considions have to be met:
/// - executor is dedicated
/// - executor is conected
/// - executor has no threads running or scheduled
/// </summary>
/// <returns></returns>
protected ExecutorStorageView GetNextAvailableExecutor()
{
// [email protected]; gets next available executor without bias based upon position in executors list.
ExecutorStorageView[] executors = store.GetExecutors(TriStateBoolean.True, TriStateBoolean.True);
for (int i = 0; i < executors.Length; i++)
{
nextExecutorIndex++;
if (nextExecutorIndex >= executors.Length)
{
nextExecutorIndex = 0;
}
ExecutorStorageView executor = executors[nextExecutorIndex];
int threadsOnExecutor = store.GetExecutorThreadCount(executor.ExecutorId,
ThreadState.Ready,
ThreadState.Scheduled,
ThreadState.Started);
if (threadsOnExecutor < executors[nextExecutorIndex].NumberOfCpu)
{
return(executor);
}
}
return(null);
}
/// <summary>
/// Remove all executors from storage.
///
/// </summary>
/// <remarks>
/// Q: What to do with applications that have running threads on any of the executors?
/// A: This is a storage level function so we cannot stop the applications on the executors from here.
/// </remarks>
/// <param name="storage">Target storage where this maintanance will be performed.</param>
public void RemoveAllExecutors(IManagerStorage storage)
{
ExecutorStorageView[] executors = storage.GetExecutors();
foreach (ExecutorStorageView executor in executors)
{
storage.DeleteExecutor(executor);
}
}
/// <summary>
/// Remove all executors that have not been pinged since the given time.
/// </summary>
/// <param name="storage">Target storage where this maintanance will be performed.</param>
/// <param name="pingTimeCutOff"></param>
public void RemoveExecutors(IManagerStorage storage, DateTime pingTimeCutOff)
{
ExecutorStorageView[] executors = storage.GetExecutors();
foreach (ExecutorStorageView executor in executors)
{
if (executor.PingTime < pingTimeCutOff)
{
storage.DeleteExecutor(executor);
}
}
}
/// <summary>
/// Remove all executors that have not been pinged since the given time.
/// </summary>
/// <param name="storage">Target storage where this maintanance will be performed.</param>
/// <param name="pingTimeCutOff"></param>
public void RemoveExecutors(IManagerStorage storage, DateTime pingTimeCutOff)
{
ExecutorStorageView[] executors = storage.GetExecutors();
foreach (ExecutorStorageView executor in executors)
{
if (executor.PingTime < pingTimeCutOff)
{
storage.DeleteExecutor(executor);
}
}
}
/// <summary>
/// Remove all executors from storage.
///
/// </summary>
/// <remarks>
/// Q: What to do with applications that have running threads on any of the executors?
/// A: This is a storage level function so we cannot stop the applications on the executors from here.
/// </remarks>
/// <param name="storage">Target storage where this maintanance will be performed.</param>
public void RemoveAllExecutors(IManagerStorage storage)
{
ExecutorStorageView[] executors = storage.GetExecutors();
foreach (ExecutorStorageView executor in executors)
{
storage.DeleteExecutor(executor);
}
}
