| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef _SCOPE_GUARD_H |
| #define _SCOPE_GUARD_H |
| |
| #include "private/bionic_macros.h" |
| |
| // TODO: include explicit std::move when it becomes available |
| template<typename F> |
| class ScopeGuard { |
| public: |
| ScopeGuard(F f) : f_(f), active_(true) {} |
| |
| ScopeGuard(ScopeGuard&& that) : f_(that.f_), active_(that.active_) { |
| that.active_ = false; |
| } |
| |
| ~ScopeGuard() { |
| if (active_) { |
| f_(); |
| } |
| } |
| |
| void disable() { |
| active_ = false; |
| } |
| private: |
| F f_; |
| bool active_; |
| |
| DISALLOW_IMPLICIT_CONSTRUCTORS(ScopeGuard); |
| }; |
| |
| template<typename T> |
| ScopeGuard<T> make_scope_guard(T f) { |
| return ScopeGuard<T>(f); |
| } |
| |
| #endif // _SCOPE_GUARD_H |