tests/ffi_2/regress_43016_test.dart

// Copyright (c) 2020, 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.
//
// SharedObjects=ffi_test_functions
//
// VMOptions=--optimization-counter-threshold=200

// @dart = 2.9

import 'dart:ffi';

import 'dylib_utils.dart';

class MyStruct extends Struct {
  @Int8()
  int a;
}

typedef _c_pass_struct = Int32 Function(Pointer<MyStruct> arg0);

typedef _dart_pass_struct = int Function(Pointer<MyStruct> arg0);

int pass_struct(Pointer<MyStruct> arg0) {
  _pass_struct ??= ffiTestFunctions
      .lookupFunction<_c_pass_struct, _dart_pass_struct>('PassStruct');
  return _pass_struct(arg0);
}

_dart_pass_struct _pass_struct;

final ffiTestFunctions = dlopenPlatformSpecific("ffi_test_functions");

void main() {
  for (int i = 0; i < 10000; i++) {
    pass_struct(nullptr);
  }
}