Daco Harkes
546ddc645e
Change-Id: Iaa29e2df68875fbb363ab2ac5cd59cc99e65532b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/422102 Auto-Submit: Daco Harkes <dacoharkes@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Daco Harkes <dacoharkes@google.com>
49 lines
1.5 KiB
Dart
49 lines
1.5 KiB
Dart
// Copyright (c) 2023, 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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// SharedObjects=ffi_test_functions
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import 'dart:ffi';
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import 'dart:isolate';
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import 'dylib_utils.dart';
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final ffiTestFunctions = dlopenPlatformSpecific("ffi_test_functions");
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final initializeApi = ffiTestFunctions
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.lookupFunction<
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IntPtr Function(Pointer<Void>),
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int Function(Pointer<Void>)
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>("InitDartApiDL");
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final enterBarrier = ffiTestFunctions
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.lookupFunction<Void Function(IntPtr, Bool), void Function(int, bool)>(
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"WaitUntilNThreadsEnterBarrier",
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);
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main() async {
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initializeApi(NativeApi.initializeApiDLData);
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const threadBarrierCount = 30;
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// The threads may explicitly decrease the mutator count by using
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// * Dart_ExitIsolate()
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// * block and
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// * Dart_EnterIsolate()
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await testNativeBarrier(threadBarrierCount, true);
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// The threads may not explicitly exit the isolate but the VM may implicitly
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// (when entering an isolate for execution) kick other threads out of the
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// mutator count (by making them implicitly go to slow path when trying to
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// leave a safepoint).
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await testNativeBarrier(threadBarrierCount, false);
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}
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Future testNativeBarrier(int count, bool exitAndReenterIsolate) async {
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final all = <Future>[];
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for (int i = 0; i < count; ++i) {
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all.add(Isolate.run(() => enterBarrier(count, true)));
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}
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await Future.wait(all);
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}
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