1 /* 2 * Copyright (c) 2022 NVIDIA Corporation 3 * 4 * Licensed under the Apache License Version 2.0 with LLVM Exceptions 5 * (the "License"); you may not use this file except in compliance with 6 * the License. You may obtain a copy of the License at 7 * 8 * https://llvm.org/LICENSE.txt 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #pragma once 17 18 #include <sdbusplus/async/stdexec/__detail/__meta.hpp> 19 20 namespace exec 21 { 22 template <stdexec::__nothrow_callable _Fn> 23 struct scope_guard 24 { 25 [[no_unique_address]] _Fn __fn_; 26 [[no_unique_address]] stdexec::__immovable __hidden_{}; 27 bool __dismissed_{false}; 28 29 ~scope_guard() 30 { 31 if (!__dismissed_) 32 ((_Fn &&) __fn_)(); 33 } 34 35 void dismiss() noexcept 36 { 37 __dismissed_ = true; 38 } 39 }; 40 41 template <stdexec::__nothrow_callable _Fn> 42 scope_guard(_Fn) -> scope_guard<_Fn>; 43 } // namespace exec 44