c996a8e73e
Taken from bionic/libc/private/ScopeGuard.h. Test: New unit tests Change-Id: If83c1990efbf294aee0b5d40a7a9ac326e5e765e
60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_BASE_SCOPEGUARD_H
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#define ANDROID_BASE_SCOPEGUARD_H
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#include <utility> // for std::move
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namespace android {
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namespace base {
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template <typename F>
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class ScopeGuard {
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public:
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ScopeGuard(F f) : f_(f), active_(true) {}
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ScopeGuard(ScopeGuard&& that) : f_(std::move(that.f_)), active_(that.active_) {
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that.active_ = false;
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}
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~ScopeGuard() {
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if (active_) f_();
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}
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ScopeGuard() = delete;
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ScopeGuard(const ScopeGuard&) = delete;
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void operator=(const ScopeGuard&) = delete;
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void operator=(ScopeGuard&& that) = delete;
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void Disable() { active_ = false; }
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bool active() const { return active_; }
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private:
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F f_;
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bool active_;
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};
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template <typename T>
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ScopeGuard<T> make_scope_guard(T f) {
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return ScopeGuard<T>(f);
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}
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} // namespace base
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} // namespace android
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#endif // ANDROID_BASE_SCOPEGUARD_H
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