private async Task PushItem(BackgroundUpdateScheduleHandler item)
{
using (var releaser = await _ScheduleUpdateLock.LockAsync())
{
// 重複登録を防止しつつ、追加処理
if (UpdateTargetStack.All(x => x != item))
{
UpdateTargetStack.Add(item);
UpdateTargetStack.Sort((a, b) => b.Priority - a.Priority);
}
}
}
public BackgroundUpdateScheduleHandler InstantBackgroundUpdateScheduling(
IBackgroundUpdateable target,
string id,
string groupId = null,
int priority = 0,
string label = null
)
{
var handler = new BackgroundUpdateScheduleHandler(target, this, id, groupId, priority, label);
handler.ScheduleUpdate();
return(handler);
}
private async void StartTaskAndRegistration(BackgroundUpdateScheduleHandler item)
{
var cancelTokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(30));
var taskInfo = new RunningTaskInfo()
{
Target = item.Target,
Item = item,
CancelTokenSource = cancelTokenSource,
CurrentUpdateTargetTask =
Task.Run(async() =>
{
try
{
await item.Target.BackgroundUpdate(UIDispatcher)
.AsTask(cancelTokenSource.Token);
#if DEBUG
await Task.Delay(500);
#endif
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
return(item);
}
)
.ContinueWith(OnContinueTask)
};
// キャンセル時の処理
taskInfo.CancelTokenSource.Token.Register(OnTaskCanceled, taskInfo);
Debug.WriteLine($"BGTask[{Id}]: begining update {taskInfo.Item.Id}");
(item as BackgroundUpdateScheduleHandler)?.Start(UIDispatcher);
BackgroundUpdateStartedEvent?.Invoke(this, item);
using (var releaser = await _ScheduleUpdateLock.LockAsync())
{
_RunningTasks.Add(taskInfo);
}
}
public BackgroundUpdateScheduleHandler RegistrationBackgroundUpdateScheduleHandler(
IBackgroundUpdateable target,
string id,
string groupId = null,
int priority = 0,
string label = null
)
{
// Note: ここで予めBGUpdateInfo同士の
// 依存関係解決の元になる情報を構築することもできる
BackgroundUpdateScheduleHandler handler;
if (_UpdateInfoMap.ContainsKey(target))
{
handler = _UpdateInfoMap[target];
}
else
{
handler = new BackgroundUpdateScheduleHandler(target, this, id, groupId, priority, label);
_UpdateInfoMap.Add(target, handler);
}
return(handler);
}
/// <summary>
/// スケジュール
/// BackgroundUpdateInfo から呼ばれます
/// </summary>
/// <param name="item"></param>
internal async void Schedule(BackgroundUpdateScheduleHandler item)
{
await PushItem(item);
await TryBeginNext();
}
