| // 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. |
| // |
| // Dart test program for testing dart:ffi struct pointers. |
| // |
| // VMOptions=--deterministic |
| // |
| // SharedObjects=ffi_test_functions |
| // |
| // TODO(37295): Merge this file with regress_37511_test.dart when callback |
| // support lands. |
| |
| import 'dart:ffi'; |
| |
| import 'ffi_test_helpers.dart'; |
| |
| /// Estimate of how many allocations functions in `functionsToTest` do at most. |
| const gcAfterNAllocationsMax = 10; |
| |
| void main() { |
| for (Function() f in functionsToTest) { |
| f(); // Ensure code is compiled. |
| |
| for (int n = 1; n <= gcAfterNAllocationsMax; n++) { |
| collectOnNthAllocation(n); |
| f(); |
| } |
| } |
| } |
| |
| final List<Function()> functionsToTest = [ |
| // Callback trampolines. |
| doFromFunction, |
| () => callbackSmallDouble(dartFunctionPointer), |
| ]; |
| |
| // Callback trampoline helpers. |
| typedef NativeCallbackTest = Int32 Function(Pointer); |
| typedef NativeCallbackTestFn = int Function(Pointer); |
| |
| final callbackSmallDouble = ffiTestFunctions |
| .lookupFunction<NativeCallbackTest, NativeCallbackTestFn>( |
| "TestSimpleMultiply", |
| ); |
| |
| typedef SimpleMultiplyType = Double Function(Double); |
| double simpleMultiply(double x) => x * 1.337; |
| |
| final doFromFunction = |
| () => Pointer.fromFunction<SimpleMultiplyType>(simpleMultiply, 0.0); |
| |
| final dartFunctionPointer = doFromFunction(); |