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/*
* 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
// 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_;
ScopeGuard() = delete;
ScopeGuard(const ScopeGuard&) = delete;
ScopeGuard& operator=(const ScopeGuard&) = delete;
};
template<typename T>
ScopeGuard<T> create_scope_guard(T f) {
return ScopeGuard<T>(f);
}
#endif // SCOPE_GUARD_H
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