mirror of
https://github.com/dart-lang/sdk
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a45276ab91
This can only be landed when `Allocator`, `Opaque`, and `AllocatorAlloc` have rolled into Flutter/engine, that into Flutter/flutter, and into g3. Deletes all the copies of `_CallocAllocator` and uses the one from `package:ffi` instead. Bug: https://github.com/dart-lang/sdk/issues/44622 Bug: https://github.com/dart-lang/sdk/issues/43974 Bug: https://github.com/dart-lang/sdk/issues/44621 Bug: https://github.com/dart-lang/sdk/issues/38721 Change-Id: I486034b379b5a63cad4aefd503ccd0f2ce5dd45e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/180188 Commit-Queue: Daco Harkes <dacoharkes@google.com> Reviewed-by: Aske Simon Christensen <askesc@google.com>
86 lines
2.6 KiB
Dart
86 lines
2.6 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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import 'dart:ffi';
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import 'package:ffi/ffi.dart';
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import 'coordinate.dart';
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import 'dylib_utils.dart';
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typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
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typedef CoordinateTrice = Pointer<Coordinate> Function(
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Pointer<NativeFunction<NativeCoordinateOp>>, Pointer<Coordinate>);
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typedef BinaryOp = int Function(int, int);
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typedef NativeIntptrBinOp = IntPtr Function(IntPtr, IntPtr);
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typedef NativeIntptrBinOpLookup = Pointer<NativeFunction<NativeIntptrBinOp>>
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Function();
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typedef NativeApplyTo42And74Type = IntPtr Function(
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Pointer<NativeFunction<NativeIntptrBinOp>>);
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typedef ApplyTo42And74Type = int Function(
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Pointer<NativeFunction<NativeIntptrBinOp>>);
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int myPlus(int a, int b) {
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print("myPlus");
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print(a);
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print(b);
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return a + b;
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}
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main() {
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print('start main');
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DynamicLibrary ffiTestFunctions =
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dlopenPlatformSpecific("ffi_test_functions");
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{
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// Pass a c pointer to a c function as an argument to a c function.
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Pointer<NativeFunction<NativeCoordinateOp>> transposeCoordinatePointer =
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ffiTestFunctions.lookup("TransposeCoordinate");
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Pointer<NativeFunction<CoordinateTrice>> p2 =
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ffiTestFunctions.lookup("CoordinateUnOpTrice");
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CoordinateTrice coordinateUnOpTrice = p2.asFunction();
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final c1 = calloc<Coordinate>()
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..ref.x = 10.0
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..ref.y = 20.0;
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c1.ref.next = c1;
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Coordinate result = coordinateUnOpTrice(transposeCoordinatePointer, c1).ref;
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print(result.runtimeType);
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print(result.x);
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print(result.y);
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calloc.free(c1);
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}
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{
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// Return a c pointer to a c function from a c function.
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Pointer<NativeFunction<NativeIntptrBinOpLookup>> p14 =
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ffiTestFunctions.lookup("IntptrAdditionClosure");
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NativeIntptrBinOpLookup intptrAdditionClosure = p14.asFunction();
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Pointer<NativeFunction<NativeIntptrBinOp>> intptrAdditionPointer =
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intptrAdditionClosure();
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BinaryOp intptrAddition = intptrAdditionPointer.asFunction();
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print(intptrAddition(10, 27));
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}
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{
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Pointer<NativeFunction<NativeIntptrBinOp>> pointer =
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Pointer.fromFunction(myPlus, 0);
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print(pointer);
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Pointer<NativeFunction<NativeApplyTo42And74Type>> p17 =
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ffiTestFunctions.lookup("ApplyTo42And74");
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ApplyTo42And74Type applyTo42And74 = p17.asFunction();
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int result = applyTo42And74(pointer);
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print(result);
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}
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print("end main");
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}
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