private async Task CalculateAsync(IntPtr calculation_ptr)
{
using (var calculation = new NotifierNotificationHandle(calculation_ptr))
{
ChangeDetails details = null;
calculation.GetChanges(nativeDetails =>
{
if (nativeDetails.HasValue)
{
var pathOnDisk = nativeDetails.Value.PathOnDisk;
Realm previousRealm = null;
if (nativeDetails.Value.previous_realm != IntPtr.Zero)
{
previousRealm = Realm.GetInstance(new NotifierRealmConfiguration(nativeDetails.Value.previous_realm, pathOnDisk));
}
var currentRealm = Realm.GetInstance(new NotifierRealmConfiguration(nativeDetails.Value.current_realm, pathOnDisk));
details = new ChangeDetails(nativeDetails.Value.Path, nativeDetails.Value.change_sets.AsEnumerable(), previousRealm, currentRealm);
}
});
if (details == null)
{
return;
}
try
{
foreach (var handler in _handlers)
{
try
{
if (handler.ShouldHandle(details.RealmPath))
{
await handler.HandleChangeAsync(details);
}
}
catch
{
// Don't skip notifications because someone didn't do a good job at error handling
// TODO: figure out a way to propagate those.
}
}
}
finally
{
details.PreviousRealm?.Dispose();
details.CurrentRealm.Dispose();
}
}
}
public static extern void get_changes(NotifierNotificationHandle handle, IntPtr callback, out NativeException nativeException);