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dijunkun
42 lines
915 B
C++
42 lines
915 B
C++
/*
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* @Author: DI JUNKUN
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* @Date: 2026-02-28
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* Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
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*/
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#ifndef CROSSDESK_GUI_DEVICE_PRESENCE_CACHE_H_
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#define CROSSDESK_GUI_DEVICE_PRESENCE_CACHE_H_
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#include <mutex>
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#include <string>
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#include <unordered_map>
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namespace crossdesk {
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class DevicePresenceCache {
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public:
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void SetOnline(const std::string &device_id, bool online) {
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std::lock_guard<std::mutex> lock(mutex_);
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cache_[device_id] = online;
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}
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bool IsOnline(const std::string &device_id) const {
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std::lock_guard<std::mutex> lock(mutex_);
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const auto it = cache_.find(device_id);
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return it != cache_.end() && it->second;
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}
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void Clear() {
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std::lock_guard<std::mutex> lock(mutex_);
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cache_.clear();
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}
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private:
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std::unordered_map<std::string, bool> cache_;
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mutable std::mutex mutex_;
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};
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} // namespace crossdesk
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#endif // CROSSDESK_GUI_DEVICE_PRESENCE_CACHE_H_
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