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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
31 lines
974 B
Dart
31 lines
974 B
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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//
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// Helpers for tests which trigger GC in delicate places.
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// @dart = 2.9
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import 'dart:ffi';
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import 'dylib_utils.dart';
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typedef NativeNullaryOp = Void Function();
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typedef NullaryOpVoid = void Function();
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typedef NativeUnaryOp = Void Function(IntPtr);
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typedef UnaryOpVoid = void Function(int);
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final DynamicLibrary ffiTestFunctions =
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dlopenPlatformSpecific("ffi_test_functions");
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final triggerGc = ffiTestFunctions
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.lookupFunction<NativeNullaryOp, NullaryOpVoid>("TriggerGC");
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final collectOnNthAllocation = ffiTestFunctions
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.lookupFunction<NativeUnaryOp, UnaryOpVoid>("CollectOnNthAllocation");
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extension PointerOffsetBy<T extends NativeType> on Pointer<T> {
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Pointer<T> offsetBy(int bytes) => Pointer.fromAddress(address + bytes);
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}
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