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// Copyright (c) 2022, 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.
//
// SharedObjects=ffi_test_functions
//
// VMOptions=--trace-finalizers
import 'dart:ffi';
import 'package:expect/expect.dart';
import 'package:ffi/ffi.dart';
import 'dylib_utils.dart';
import 'ffi_test_helpers.dart';
void main() {
testFinalizerRuns();
testFinalizerDetach();
testDoubleDetach();
testDetachNonDetach();
testWrongArguments();
}
DynamicLibrary ffiTestFunctions = dlopenPlatformSpecific("ffi_test_functions");
void testFinalizerRuns() {
using((Arena allocator) {
final token = allocator<IntPtr>();
createAndLoseFinalizable(token);
doGC();
Expect.equals(42, token.value);
});
}
void createAndLoseFinalizable(Pointer<IntPtr> token) {
final myFinalizable = MyFinalizable();
setTokenFinalizer.attach(myFinalizable, token.cast());
Expect.equals(0, token.value);
}
void testFinalizerDetach() {
using((Arena allocator) {
final token = allocator<IntPtr>();
attachAndDetach(token);
doGC();
Expect.equals(0, token.value);
});
}
class Detach {
String identifier;
Detach(this.identifier);
}
void attachAndDetach(Pointer<IntPtr> token) {
final myFinalizable = MyFinalizable();
final detach = Detach('detach 123');
setTokenFinalizer.attach(myFinalizable, token.cast(), detach: detach);
setTokenFinalizer.detach(detach);
Expect.equals(0, token.value);
}
void testDoubleDetach() {
using((Arena allocator) {
final token = allocator<IntPtr>();
final myFinalizable = MyFinalizable();
final detach = Detach('detach 321');
setTokenFinalizer.attach(myFinalizable, token.cast(), detach: detach);
setTokenFinalizer.detach(detach);
setTokenFinalizer.detach(detach);
Expect.equals(0, token.value);
});
}
void testDetachNonDetach() {
final detach = Detach('detach 456');
setTokenFinalizer.detach(detach);
setTokenFinalizer.detach(detach);
}
void testWrongArguments() {
using((Arena allocator) {
final token = allocator<IntPtr>().cast<Void>();
Expect.throws(() {
final myFinalizable = MyFinalizable();
setTokenFinalizer.attach(myFinalizable, token, externalSize: -1024);
});
Expect.throws(() {
final myFinalizable = MyFinalizable();
setTokenFinalizer.attach(myFinalizable, token, detach: 123);
});
});
}