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include/utils/global_data.hpp

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+/*
+  Copyright <2018-2022> <scott.e.graves@protonmail.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+  associated documentation files (the "Software"), to deal in the Software without restriction,
+  including without limitation the rights to use, copy, modify, merge, publish, distribute,
+  sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all copies or
+  substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+  NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
+  OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+#ifndef INCLUDE_UTILS_GLOBAL_DATA_HPP_
+#define INCLUDE_UTILS_GLOBAL_DATA_HPP_
+
+#include "common.hpp"
+
+namespace repertory {
+class global_data final {
+public:
+  global_data(const global_data &) = delete;
+
+  global_data(global_data &&) = delete;
+
+  global_data &operator=(const global_data &) = delete;
+
+  global_data &operator=(global_data &&) = delete;
+
+private:
+  global_data() : used_cache_space_(0u), used_drive_space_(0u) {}
+
+  ~global_data() = default;
+
+private:
+  static global_data instance_;
+
+public:
+  static global_data &instance() { return instance_; }
+
+private:
+  std::atomic<std::uint64_t> used_cache_space_;
+  std::atomic<std::uint64_t> used_drive_space_;
+
+public:
+  void decrement_used_drive_space(const std::uint64_t &val) { used_drive_space_ -= val; }
+
+  std::uint64_t get_used_cache_space() const { return used_cache_space_; }
+
+  std::uint64_t get_used_drive_space() const { return used_drive_space_; }
+
+  void increment_used_drive_space(const std::uint64_t &val) { used_drive_space_ += val; }
+
+  void initialize_used_cache_space(const std::uint64_t &val) { used_cache_space_ = val; }
+
+  void initialize_used_drive_space(const std::uint64_t &val) { used_drive_space_ = val; }
+
+  void update_used_space(const std::uint64_t &file_size, const std::uint64_t &new_file_size,
+                         const bool &cache_only);
+};
+} // namespace repertory
+
+#endif // INCLUDE_UTILS_GLOBAL_DATA_HPP_