Sikuwa first commit

cpp_cache/smart_cache_simple.h

@@ -0,0 +1,77 @@
+// sikuwa/cpp_cache/smart_cache_simple.h
+// 简化版智能缓存系统
+
+#ifndef SMART_CACHE_SIMPLE_H
+#define SMART_CACHE_SIMPLE_H
+
+#include <iostream>
+#include <unordered_map>
+#include <list>
+#include <string>
+#include <vector>
+#include <memory>
+#include <mutex>
+
+// LRU (Least Recently Used) 缓存实现
+class LRUCache {
+private:
+    size_t max_size_;
+    std::unordered_map<std::string, std::pair<std::string, std::list<std::string>::iterator>> cache_;
+    std::list<std::string> usage_order_;
+    std::mutex mutex_;
+
+public:
+    LRUCache(size_t max_size = 1000);
+    ~LRUCache();
+    bool contains(const std::string& key);
+    bool put(const std::string& key, const std::string& value);
+    std::string get(const std::string& key);
+    bool remove(const std::string& key);
+    void clear();
+    size_t size();
+    size_t max_size();
+    void set_max_size(size_t max_size);
+    void dump_cache_stats();
+};
+
+// 构建缓存系统
+class BuildCache {
+private:
+    std::unique_ptr<LRUCache> cache_;
+    std::string cache_dir_;
+    std::mutex mutex_;
+
+    // 计算字符串的哈希值
+    std::string calculate_hash(const std::string& input);
+    
+    // 计算文件的哈希值
+    std::string calculate_file_hash(const std::string& file_path);
+
+public:
+    BuildCache(const std::string& cache_dir = ".cache", size_t max_size = 1000000000);
+    ~BuildCache();
+    
+    // 缓存构建结果
+    bool cache_build_result(const std::string& target, 
+                          const std::string& command, 
+                          const std::vector<std::string>& dependencies,
+                          const std::string& result);
+    
+    // 获取缓存的构建结果
+    std::string get_cached_build_result(const std::string& target, 
+                                      const std::string& command, 
+                                      const std::vector<std::string>& dependencies);
+    
+    // 检查是否需要重新构建
+    bool needs_rebuild(const std::string& target, 
+                     const std::string& command, 
+                     const std::vector<std::string>& dependencies);
+    
+    // 清理所有缓存
+    void clean_all_cache();
+    
+    // 导出缓存统计信息
+    void dump_build_cache_stats();
+};
+
+#endif // SMART_CACHE_SIMPLE_H