blob: aa2ed864a19bc75b3c5d219f23188991679f3a47 [file] [log] [blame]
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Helpers for tests which trigger GC in delicate places.
// @dart = 2.9
import 'dart:ffi';
import 'dylib_utils.dart';
typedef NativeNullaryOp = Void Function();
typedef NullaryOpVoid = void Function();
typedef NativeUnaryOp = Void Function(IntPtr);
typedef UnaryOpVoid = void Function(int);
final DynamicLibrary ffiTestFunctions =
final triggerGc = ffiTestFunctions
.lookupFunction<NativeNullaryOp, NullaryOpVoid>("TriggerGC");
final collectOnNthAllocation = ffiTestFunctions
.lookupFunction<NativeUnaryOp, UnaryOpVoid>("CollectOnNthAllocation");
extension PointerOffsetBy<T extends NativeType> on Pointer<T> {
Pointer<T> offsetBy(int bytes) => Pointer.fromAddress(address + bytes);