internal void AddPendingEvent(PendingEvent ev)
{
if (IsShuttingDown) // don't care about adding anything if we're shutting down
{
return;
}
lock (_lockHeap)
{
_eventHeap.Push(ev);
}
}
// returns the index of the added item
int Add(PendingEvent ev)
{
// check if we need to resize
if (_events.Length == Count)
{
var bigger = new PendingEvent[_events.Length * 2];
Array.Copy(_events, bigger, Count);
_events = bigger;
}
_events[Count] = ev;
return(Count++); // postfix is intentional
}
public void Push(PendingEvent ev)
{
if (ev == null)
{
throw new ArgumentNullException(nameof(ev));
}
var ei = Add(ev);
while (ei > 0)
{
var pi = ParentIndex(ei);
if (ev.IsEarlierThan(_events[pi]))
{
Swap(ei, pi);
ei = pi;
}
else
{
break;
}
}
}
internal bool IsEarlierThan(PendingEvent ev)
{
return ScheduledTime < ev.ScheduledTime;
}
// returns the index of the added item
private int Add(PendingEvent ev)
{
// check if we need to resize
if (_events.Length == Count)
{
var bigger = new PendingEvent[_events.Length * 2];
Array.Copy(_events, bigger, Count);
_events = bigger;
}
_events[Count] = ev;
return Count++; // postfix is intentional
}
public void Push(PendingEvent ev)
{
if (ev == null)
throw new ArgumentNullException(nameof(ev));
var ei = Add(ev);
while (ei > 0)
{
var pi = ParentIndex(ei);
if (ev.IsEarlierThan(_events[pi]))
{
Swap(ei, pi);
ei = pi;
}
else
{
break;
}
}
}
internal async Task RunPendingEvent(PendingEvent ev)
{
var eventTime = ev.ScheduledTime;
var execLockTaken = false;
try
{
lock (_scheduleLock)
{
if (ev.RunId != _runId)
return;
// take execution lock
execLockTaken = Interlocked.CompareExchange(ref _execLocked, 1, 0) == 0;
if (execLockTaken)
PrevEvent = eventTime; // set this here while we're still in the schedule lock
}
if (execLockTaken)
{
try
{
if (Callback != null)
Callback(this, eventTime);
else
await AsyncCallback(this, eventTime).ConfigureAwait(false);
}
catch (Exception ex)
{
RaiseException(ex);
}
}
}
finally
{
if (execLockTaken)
_execLocked = 0; // release exec lock
}
// figure out the next time to run the schedule
lock (_scheduleLock)
{
if (ev.RunId != _runId)
return;
try
{
var next = Schedule.Next();
if (next <= eventTime)
next = Schedule.Next(eventTime);
NextEvent = next;
QueueNextEvent();
}
catch (Exception ex)
{
_runId++;
IsScheduleRunning = false;
RaiseException(new ScheduleCrashException("Schtick Schedule has been terminated because the next valid time could not be found.", this, ex));
}
}
}
internal void AddPendingEvent(PendingEvent ev)
{
if (IsShuttingDown) // don't care about adding anything if we're shutting down
return;
lock (_lockHeap)
{
_eventHeap.Push(ev);
}
}
internal async Task RunPendingEvent(PendingEvent ev)
{
var eventTime = ev.ScheduledTime;
var execLockTaken = false;
try
{
lock (_scheduleLock)
{
if (ev.RunId != _runId)
{
return;
}
// take execution lock
execLockTaken = Interlocked.CompareExchange(ref _execLocked, 1, 0) == 0;
if (execLockTaken)
{
PrevEvent = eventTime; // set this here while we're still in the schedule lock
}
}
if (execLockTaken)
{
try
{
if (Callback != null)
{
Callback(this, eventTime);
}
else
{
await AsyncCallback(this, eventTime).ConfigureAwait(false);
}
}
catch (Exception ex)
{
RaiseException(ex);
}
}
}
finally
{
if (execLockTaken)
{
_execLocked = 0; // release exec lock
}
}
// figure out the next time to run the schedule
lock (_scheduleLock)
{
if (ev.RunId != _runId)
{
return;
}
try
{
var next = Schedule.Next();
if (next <= eventTime)
{
next = Schedule.Next(eventTime);
}
NextEvent = next;
QueueNextEvent();
}
catch (Exception ex)
{
_runId++;
IsScheduleRunning = false;
RaiseException(new ScheduleCrashException("Schtick Schedule has been terminated because the next valid time could not be found.", this, ex));
}
}
}
internal bool IsEarlierThan(PendingEvent ev)
{
return(ScheduledTime < ev.ScheduledTime);
}
