famedlysdk/lib/src/utils/run_in_background.dart

37 lines
1.2 KiB
Dart

/*
* Famedly Matrix SDK
* Copyright (C) 2020 Famedly GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import 'package:isolate/isolate.dart';
import 'dart:async';
Future<T> runInBackground<T, U>(
FutureOr<T> Function(U arg) function, U arg) async {
IsolateRunner isolate;
try {
isolate = await IsolateRunner.spawn();
} on UnsupportedError {
// web does not support isolates (yet), so we fall back to calling the method directly
return await function(arg);
}
try {
return await isolate.run(function, arg);
} finally {
await isolate.close();
}
}