/// <summary> Creates a new instance that operates with the given values. </summary>
/// <param name="onExecute"></param>
/// <param name="stateObj"></param>
/// <param name="jobName"></param>
public JobHandle(JobExecutionHandler onExecute, object stateObj, string jobName)
{
_jobExecutionHandler = onExecute;
_stateObject = stateObj;
_jobName = jobName;
_waitHandle = new ManualResetEventSlim(false);
}
/// <summary> Is invoked when a task for a job is being executed. </summary>
/// <param name="dataStore">Data store object array</param>
private void OnTaskExecution(object[] dataStore)
{
string jobName = null;
try {
JobExecutionHandler onExecute = (JobExecutionHandler)dataStore[0];
object onExecuteState = dataStore[1];
jobName = (string)dataStore[2] ?? "unnamed";
using (IProgressMonitor progressMonitor = UIFactory.NewService <IProgressMonitor>()) {
onExecute(progressMonitor, onExecuteState);
}
} catch (ThreadAbortException ex) {
Thread.ResetAbort();
_log.Fatal("Thread has been explicitly cancelled!", ex);
} catch (Exception ex) {
_log.Error($"Error on executing job '{jobName}'.", ex);
}
}
/// <inheritdoc />
public IJobHandle Schedule(JobExecutionHandler onExecute, object state, string jobName)
{
if (onExecute == null)
{
throw new ArgumentNullException(nameof(onExecute));
}
JobHandle jobHandle = new JobHandle(onExecute, state, jobName);
lock (_jobQueue) {
_jobQueue.Enqueue(jobHandle);
}
using (_processingQueue.Lock()) {
if (!_processingQueue.Get())
{
_processingQueue.Set(true);
ThreadPool.QueueUserWorkItem(ProcessJobQueue, _jobQueue);
}
}
return(jobHandle);
}
