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b0155a72a7
The `tests/ffi/prepare_flutter_bundle.dart` script will try to discover
all synchronous, positive test from the "ffi" test suite, rewrite them
slightly and output a directory which can be used in a flutter/flutter
FFI integration test.
We split the ffi test functions into two parts, because a subset of the
C functions will issue calls to the VM via `dart_api.h`, which is not
available for the flutter/flutter integration test.
=> We make `runtime/bin/ffi_test/ffi_test_functions.cc` a pure C
library, usable without `dart_api.h` and move the remaining VM
specific code to .../ffi_test_functions_special.cc contains.
All tests from `tests/ffi/*_test.dart` will be included in the generated
bundle, which
* don't use async/isolates
* don't rely on VM api
* don't rely on DynamicLibrary.{process,executable}
* don't take too long to execute
The script can be used as follows:
sdk % dart tests/ffi/prepare_flutter_bundle.dart foo
Using SDK root: .../sdk
The following tests will be included:
aliasing_test.dart
data_not_asan_test.dart
data_test.dart
extension_methods_test.dart
external_typed_data_test.dart
function_structs_test.dart
negative_function_test.dart
regress_37254_test.dart
regress_39044_test.dart
regress_39063_test.dart
regress_39068_test.dart
stacktrace_regress_37910_test.dart
structs_test.dart
variance_function_test.dart
The following tests were filtered due to using dart_api.h/async/DynamicLibrary.{process,executable}/...
function_callbacks_test.dart
function_gc_test.dart
function_test.dart
object_gc_test.dart
regress_37100_test.dart
regress_37511_callbacks_test.dart
regress_37511_test.dart
regress_37780_test.dart
Please copy generated files into FFI flutter test application
* foo/lib/src/generated
* foo/ios/Classes
Change-Id: Ia13f97df3bbc90829bb8fde8265a7e1d2c0f8260
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127006
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
119 lines
3.2 KiB
Dart
119 lines
3.2 KiB
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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// Dart test program for testing dart:ffi function pointers with struct
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// arguments.
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//
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// SharedObjects=ffi_test_functions
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import 'dart:ffi';
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import 'dylib_utils.dart';
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import "package:expect/expect.dart";
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import "package:ffi/ffi.dart";
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import 'coordinate.dart';
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import 'very_large_struct.dart';
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typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
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void main() {
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testFunctionWithStruct();
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// testFunctionWithStructArray();
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// testFunctionWithVeryLargeStruct();
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}
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DynamicLibrary ffiTestFunctions = dlopenPlatformSpecific("ffi_test_functions");
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/// pass a struct to a c function and get a struct as return value
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void testFunctionWithStruct() {
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Pointer<NativeFunction<NativeCoordinateOp>> p1 =
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ffiTestFunctions.lookup("TransposeCoordinate");
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NativeCoordinateOp f1 = p1.asFunction();
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Pointer<Coordinate> c1 = Coordinate.allocate(10.0, 20.0, nullptr).addressOf;
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Pointer<Coordinate> c2 = Coordinate.allocate(42.0, 84.0, c1).addressOf;
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c1.ref.next = c2;
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Coordinate result = f1(c1).ref;
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Expect.approxEquals(20.0, c1.ref.x);
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Expect.approxEquals(30.0, c1.ref.y);
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Expect.approxEquals(42.0, result.x);
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Expect.approxEquals(84.0, result.y);
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free(c1);
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free(c2);
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}
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/// pass an array of structs to a c funtion
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void testFunctionWithStructArray() {
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Pointer<NativeFunction<NativeCoordinateOp>> p1 =
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ffiTestFunctions.lookup("CoordinateElemAt1");
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NativeCoordinateOp f1 = p1.asFunction();
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Coordinate c1 = allocate<Coordinate>(count: 3).ref;
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Coordinate c2 = c1.addressOf[1];
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Coordinate c3 = c1.addressOf[2];
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c1.x = 10.0;
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c1.y = 10.0;
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c1.next = c3.addressOf;
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c2.x = 20.0;
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c2.y = 20.0;
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c2.next = c1.addressOf;
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c3.x = 30.0;
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c3.y = 30.0;
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c3.next = c2.addressOf;
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Coordinate result = f1(c1.addressOf).ref;
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Expect.approxEquals(20.0, result.x);
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Expect.approxEquals(20.0, result.y);
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free(c1.addressOf);
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}
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typedef VeryLargeStructSum = int Function(Pointer<VeryLargeStruct>);
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typedef NativeVeryLargeStructSum = Int64 Function(Pointer<VeryLargeStruct>);
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void testFunctionWithVeryLargeStruct() {
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Pointer<NativeFunction<NativeVeryLargeStructSum>> p1 =
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ffiTestFunctions.lookup("SumVeryLargeStruct");
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VeryLargeStructSum f = p1.asFunction();
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VeryLargeStruct vls1 = allocate<VeryLargeStruct>(count: 2).ref;
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VeryLargeStruct vls2 = vls1.addressOf[1];
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List<VeryLargeStruct> structs = [vls1, vls2];
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for (VeryLargeStruct struct in structs) {
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struct.a = 1;
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struct.b = 2;
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struct.c = 4;
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struct.d = 8;
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struct.e = 16;
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struct.f = 32;
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struct.g = 64;
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struct.h = 128;
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struct.i = 256;
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struct.j = 512;
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struct.k = 1024;
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struct.smallLastField = 1;
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}
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vls1.parent = vls2.addressOf;
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vls1.numChildren = 2;
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vls1.children = vls1.addressOf;
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vls2.parent = vls2.addressOf;
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vls2.parent = nullptr;
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vls2.numChildren = 0;
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vls2.children = nullptr;
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int result = f(vls1.addressOf);
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Expect.equals(2051, result);
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result = f(vls2.addressOf);
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Expect.equals(2048, result);
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free(vls1.addressOf);
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}
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