d8da2af1e5
Wakelock acquisition can fail if suspend service is not available. Make this clear by returning an optional value that client must check before entering wakelock critical sections. Bug: b/179229598 Test: Boot test on Pixel 4 device Change-Id: Ied00fa919c20d8a30f1c40ee34a91a2a7e240689
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
/*
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* Copyright (C) 2019 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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#pragma once
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#include <memory>
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#include <optional>
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#include <string>
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namespace android {
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namespace wakelock {
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// RAII-style wake lock implementation
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class WakeLock {
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private:
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class WakeLockImpl;
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std::unique_ptr<WakeLockImpl> mImpl;
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public:
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static std::optional<WakeLock> tryGet(const std::string& name);
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// Constructor is only made public for use with std::optional.
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// It is not intended to be and cannot be invoked from public context,
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// since private WakeLockImpl prevents calling the constructor directly.
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WakeLock(std::unique_ptr<WakeLockImpl> wlImpl);
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~WakeLock();
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};
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} // namespace wakelock
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} // namespace android
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