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![Leaf Petersen](/assets/img/avatar_default.png)
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>
139 lines
4.2 KiB
Dart
139 lines
4.2 KiB
Dart
// Copyright (c) 2020, 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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// SharedObjects=ffi_test_functions
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//
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// VMOptions=--deterministic --optimization-counter-threshold=5 --use-slow-path --stacktrace-every=100
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// @dart = 2.9
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import 'dart:ffi';
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import "package:expect/expect.dart";
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import "package:ffi/ffi.dart";
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// Reuse the struct classes.
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import 'function_structs_by_value_generated_test.dart';
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void main() {
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for (int i = 0; i < 10; i++) {
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recursiveTest(10);
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recursiveTest(11);
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testCopyLogic();
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}
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}
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void recursiveTest(int recursionCounter) {
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final pointer = calloc<Struct20BytesHomogeneousInt32>();
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final struct = pointer.ref;
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struct.a0 = 1;
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struct.a1 = 2;
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struct.a2 = 3;
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struct.a3 = 4;
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struct.a4 = 5;
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final result = dartPassStructRecursive(recursionCounter, struct);
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Expect.equals(struct.a0 + recursionCounter * 2, result.a0);
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Expect.equals(struct.a1, result.a1);
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Expect.equals(struct.a2, result.a2);
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Expect.equals(struct.a3, result.a3);
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Expect.equals(struct.a4, result.a4);
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calloc.free(pointer);
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}
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Struct20BytesHomogeneousInt32 dartPassStructRecursive(
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int recursionCounter, Struct20BytesHomogeneousInt32 struct) {
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print("callbackPassStructRecurisive($recursionCounter, $struct)");
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struct.a0++;
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final structA0Saved = struct.a0;
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if (recursionCounter <= 0) {
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print("returning");
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return struct;
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}
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final result =
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cPassStructRecursive(recursionCounter - 1, struct, functionPointer);
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result.a0++;
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// Check struct.a0 is not modified by Dart->C call.
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Expect.equals(structA0Saved, struct.a0);
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// Check struct.a0 is not modified by C->Dart callback, if so struct.a4 == 0.
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Expect.notEquals(0, struct.a4);
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return result;
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}
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final functionPointer = Pointer.fromFunction<
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Struct20BytesHomogeneousInt32 Function(
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Int64, Struct20BytesHomogeneousInt32)>(dartPassStructRecursive);
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final cPassStructRecursive = ffiTestFunctions.lookupFunction<
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Struct20BytesHomogeneousInt32 Function(Int64 recursionCounter,
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Struct20BytesHomogeneousInt32 struct, Pointer callbackAddress),
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Struct20BytesHomogeneousInt32 Function(int recursionCounter,
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Struct20BytesHomogeneousInt32, Pointer)>("PassStructRecursive");
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Struct8BytesNestedInt typedDataBackedStruct = Struct8BytesNestedInt();
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bool typedDataBackedStructSet = false;
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void _receiveStructByValue(Struct8BytesNestedInt struct) {
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typedDataBackedStruct = struct;
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typedDataBackedStructSet = true;
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}
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final _receiveStructByValuePointer =
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Pointer.fromFunction<Void Function(Struct8BytesNestedInt)>(
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_receiveStructByValue);
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final _invokeReceiveStructByValue = ffiTestFunctions.lookupFunction<
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Void Function(
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Pointer<NativeFunction<Void Function(Struct8BytesNestedInt)>>),
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void Function(
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Pointer<NativeFunction<Void Function(Struct8BytesNestedInt)>>)>(
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"CallbackWithStruct");
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void testCopyLogic() {
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_invokeReceiveStructByValue(_receiveStructByValuePointer);
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Expect.isTrue(typedDataBackedStructSet);
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final pointer = calloc<Struct8BytesNestedInt>();
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final pointerBackedStruct = pointer.ref;
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void reset() {
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pointerBackedStruct.a0.a0 = 1;
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pointerBackedStruct.a0.a1 = 2;
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pointerBackedStruct.a1.a0 = 3;
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pointerBackedStruct.a1.a1 = 4;
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typedDataBackedStruct.a0.a0 = 5;
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typedDataBackedStruct.a0.a1 = 6;
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typedDataBackedStruct.a1.a0 = 7;
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typedDataBackedStruct.a1.a1 = 8;
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}
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// Pointer -> Pointer.
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reset();
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pointerBackedStruct.a1 = pointerBackedStruct.a0;
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Expect.equals(1, pointerBackedStruct.a1.a0);
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Expect.equals(2, pointerBackedStruct.a1.a1);
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// Pointer -> TypedData.
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reset();
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typedDataBackedStruct.a1 = pointerBackedStruct.a0;
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Expect.equals(1, typedDataBackedStruct.a1.a0);
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Expect.equals(2, typedDataBackedStruct.a1.a1);
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// TypedData -> Pointer.
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reset();
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pointerBackedStruct.a1 = typedDataBackedStruct.a0;
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Expect.equals(5, pointerBackedStruct.a1.a0);
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Expect.equals(6, pointerBackedStruct.a1.a1);
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// TypedData -> TypedData.
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reset();
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typedDataBackedStruct.a1 = typedDataBackedStruct.a0;
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Expect.equals(5, typedDataBackedStruct.a1.a0);
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Expect.equals(6, typedDataBackedStruct.a1.a1);
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calloc.free(pointer);
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}
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