60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
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/*
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* Copyright (C) 2017 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 "info.h"
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#include <memory>
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#include <mutex>
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// A class that keeps track of the current state of the WiFi HAL. This is
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// accomplished by having the HAL call this state tracker which in turn will
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// call the appropriate functionality.
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//
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// This is needed because the HAL must have some form of global state to prevent
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// situations where the HAL is initialized while stopping. This class allows
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// the Info class to stay relatively simple and this class can focus on just the
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// state behavior.
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class HalState {
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public:
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using StopHandler = std::function<void ()>;
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HalState();
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bool init();
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bool stop(StopHandler stopHandler);
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bool eventLoop();
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Info* info();
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private:
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enum class State {
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Constructed,
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Initialized,
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Running,
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Stopping,
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Stopped,
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};
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void onStop(StopHandler stopHandler);
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std::unique_ptr<Info> mInfo;
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std::mutex mStateMutex;
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State mState;
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};
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