public BackgroundDispatcherAsync(
[NotNull] IBackgroundExecution execution,
[NotNull] Func <Guid, object, Task> action,
[CanBeNull] object state,
[NotNull] TaskScheduler taskScheduler,
int maxConcurrency,
bool ownsScheduler)
{
if (maxConcurrency <= 0)
{
throw new ArgumentOutOfRangeException(nameof(maxConcurrency));
}
_execution = execution ?? throw new ArgumentNullException(nameof(execution));
_action = action ?? throw new ArgumentNullException(nameof(action));
_state = state;
_taskScheduler = taskScheduler ?? throw new ArgumentNullException(nameof(taskScheduler));
_ownsScheduler = ownsScheduler;
#if !NETSTANDARD1_3
AppDomainUnloadMonitor.EnsureInitialized();
#endif
_stopped = new CountdownEvent(maxConcurrency);
for (var i = 0; i < maxConcurrency; i++)
{
Task.Factory.StartNew(
DispatchLoop,
CancellationToken.None,
TaskCreationOptions.None,
_taskScheduler).Unwrap();
}
}
public BackgroundDispatcher(
[NotNull] IBackgroundExecution execution,
[NotNull] Action <Guid, object> action,
[CanBeNull] object state,
[NotNull] Func <ThreadStart, IEnumerable <Thread> > threadFactory)
{
if (threadFactory == null)
{
throw new ArgumentNullException(nameof(threadFactory));
}
_execution = execution ?? throw new ArgumentNullException(nameof(execution));
_action = action ?? throw new ArgumentNullException(nameof(action));
_state = state;
#if !NETSTANDARD1_3
AppDomainUnloadMonitor.EnsureInitialized();
#endif
var threads = threadFactory(DispatchLoop)?.ToArray();
if (threads == null || threads.Length == 0)
{
throw new ArgumentException("At least one unstarted thread should be created.", nameof(threadFactory));
}
if (threads.Any(thread => thread == null || (thread.ThreadState & ThreadState.Unstarted) == 0))
{
throw new ArgumentException("All the threads should be non-null and in the ThreadState.Unstarted state.", nameof(threadFactory));
}
_stopped = new CountdownEvent(threads.Length);
foreach (var thread in threads)
{
thread.Start();
}
}