mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 08:24:39 +00:00
![Daco Harkes](/assets/img/avatar_default.png)
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
|
|
// 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.
|
|
|
|
import 'dart:ffi';
|
|
|
|
import 'package:ffi/ffi.dart';
|
|
|
|
import 'coordinate.dart';
|
|
import 'dylib_utils.dart';
|
|
|
|
typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
|
|
|
|
typedef CoordinateTrice = Pointer<Coordinate> Function(
|
|
Pointer<NativeFunction<NativeCoordinateOp>>, Pointer<Coordinate>);
|
|
|
|
typedef BinaryOp = int Function(int, int);
|
|
typedef NativeIntptrBinOp = IntPtr Function(IntPtr, IntPtr);
|
|
typedef NativeIntptrBinOpLookup = Pointer<NativeFunction<NativeIntptrBinOp>>
|
|
Function();
|
|
|
|
typedef NativeApplyTo42And74Type = IntPtr Function(
|
|
Pointer<NativeFunction<NativeIntptrBinOp>>);
|
|
|
|
typedef ApplyTo42And74Type = int Function(
|
|
Pointer<NativeFunction<NativeIntptrBinOp>>);
|
|
|
|
int myPlus(int a, int b) {
|
|
print("myPlus");
|
|
print(a);
|
|
print(b);
|
|
return a + b;
|
|
}
|
|
|
|
main() {
|
|
print('start main');
|
|
|
|
DynamicLibrary ffiTestFunctions =
|
|
dlopenPlatformSpecific("ffi_test_functions");
|
|
|
|
{
|
|
// Pass a c pointer to a c function as an argument to a c function.
|
|
Pointer<NativeFunction<NativeCoordinateOp>> transposeCoordinatePointer =
|
|
ffiTestFunctions.lookup("TransposeCoordinate");
|
|
Pointer<NativeFunction<CoordinateTrice>> p2 =
|
|
ffiTestFunctions.lookup("CoordinateUnOpTrice");
|
|
CoordinateTrice coordinateUnOpTrice = p2.asFunction();
|
|
final c1 = calloc<Coordinate>()
|
|
..ref.x = 10.0
|
|
..ref.y = 20.0;
|
|
c1.ref.next = c1;
|
|
Coordinate result = coordinateUnOpTrice(transposeCoordinatePointer, c1).ref;
|
|
print(result.runtimeType);
|
|
print(result.x);
|
|
print(result.y);
|
|
calloc.free(c1);
|
|
}
|
|
|
|
{
|
|
// Return a c pointer to a c function from a c function.
|
|
Pointer<NativeFunction<NativeIntptrBinOpLookup>> p14 =
|
|
ffiTestFunctions.lookup("IntptrAdditionClosure");
|
|
NativeIntptrBinOpLookup intptrAdditionClosure = p14.asFunction();
|
|
|
|
Pointer<NativeFunction<NativeIntptrBinOp>> intptrAdditionPointer =
|
|
intptrAdditionClosure();
|
|
BinaryOp intptrAddition = intptrAdditionPointer.asFunction();
|
|
print(intptrAddition(10, 27));
|
|
}
|
|
|
|
{
|
|
Pointer<NativeFunction<NativeIntptrBinOp>> pointer =
|
|
Pointer.fromFunction(myPlus, 0);
|
|
print(pointer);
|
|
|
|
Pointer<NativeFunction<NativeApplyTo42And74Type>> p17 =
|
|
ffiTestFunctions.lookup("ApplyTo42And74");
|
|
ApplyTo42And74Type applyTo42And74 = p17.asFunction();
|
|
|
|
int result = applyTo42And74(pointer);
|
|
print(result);
|
|
}
|
|
|
|
print("end main");
|
|
}
|