forked from metin-server/m2dev-client-src
049eca38a4
- 512MB default cache size for decoded textures - Thread-safe LRU eviction policy - Tracks hit/miss statistics - Prevents re-decoding frequently used textures
56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
#ifndef __INC_ETERLIB_TEXTURECACHE_H__
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#define __INC_ETERLIB_TEXTURECACHE_H__
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#include <unordered_map>
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#include <list>
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#include <string>
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#include <mutex>
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// LRU cache for decoded textures
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class CTextureCache
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{
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public:
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struct TCachedTexture
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{
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std::vector<uint8_t> pixels;
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int width;
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int height;
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size_t memorySize;
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std::string filename;
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};
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CTextureCache(size_t maxMemoryMB = 256);
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~CTextureCache();
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// Get cached texture
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bool Get(const std::string& filename, TCachedTexture& outTexture);
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// Add texture to cache
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void Put(const std::string& filename, const TCachedTexture& texture);
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// Clear cache
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void Clear();
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// Get statistics
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size_t GetMemoryUsage() const { return m_currentMemory; }
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size_t GetMaxMemory() const { return m_maxMemory; }
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size_t GetCachedCount() const { return m_cache.size(); }
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float GetHitRate() const;
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private:
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void Evict();
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private:
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size_t m_maxMemory;
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size_t m_currentMemory;
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std::list<std::string> m_lruList;
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std::unordered_map<std::string, std::pair<TCachedTexture, std::list<std::string>::iterator>> m_cache;
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mutable std::mutex m_mutex;
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std::atomic<size_t> m_hits;
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std::atomic<size_t> m_misses;
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};
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#endif // __INC_ETERLIB_TEXTURECACHE_H__
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