private static void NativeCancelCb(IntPtr data, IntPtr dead)
{
if (data == IntPtr.Zero)
{
return;
}
GCHandle handle = GCHandle.FromIntPtr(data);
CancelCb cb = handle.Target as CancelCb;
if (cb != null)
{
cb();
}
else
{
Eina.Log.Info("Null promise CancelCb found");
}
handle.Free();
}
/// <summary>
/// Creates a new Promise with the given callback.
///
/// Currently, creating a promise directly uses the Main Loop scheduler the source of notifications (i.e. the
/// future callbacks will be called mainly from a loop iteration).
/// </summary>
public Promise(CancelCb cancelCb = null)
{
Efl.Loop loop = Efl.App.AppMain;
// Should we be able to pass different schedulers?
IntPtr scheduler = efl_loop_future_scheduler_get(loop.NativeHandle);
IntPtr cb_data = IntPtr.Zero;
// A safety clean callback to mark this wrapper as invalid
CancelCb safetyCb = () => {
Handle = IntPtr.Zero;
if (cancelCb != null)
{
cancelCb();
}
};
CleanupHandle = GCHandle.Alloc(safetyCb);
cb_data = GCHandle.ToIntPtr(CleanupHandle);
this.Handle = eina_promise_new(scheduler, NativeCancelCb, cb_data);
}
