Class CaseCache

libcppcryptfs/filename/casecache.h:63–109

class CryptContext;

class CaseCache
{
private:
	ULONGLONG m_ttl;
	unordered_map<wstring, CaseCacheNode *> m_map;
	list<CaseCacheNode*> m_lru_list;

	list<CaseCacheNode*> m_spare_node_list;

	CRITICAL_SECTION m_crit;

	long long m_lookups;
	long long m_hits;

public:
	CryptContext *m_con;

private:
	void lock();
	void unlock();
	void remove_node(unordered_map<wstring, CaseCacheNode *>::iterator it);
	bool check_node_clean(CaseCacheNode *node);
	void update_lru(CaseCacheNode *node);
public:
	void SetTTL(int nSecs) { m_ttl = (ULONGLONG)nSecs * 1000; };

	bool store(LPCWSTR dirpath, const list<wstring>& files);
	bool store(LPCWSTR dirpath, LPCWSTR file);
	bool store(LPCWSTR filepath);
	int lookup(LPCWSTR path, wstring& result_path, bool force_not_found = false);
	bool remove(LPCWSTR path, LPCWSTR file);
	bool remove(LPCWSTR path);
	bool purge(LPCWSTR path);
	bool rename(LPCWSTR oldpath, LPCWSTR newpath);
	long long hits() { long long rval; lock(); rval = m_hits; unlock(); return rval; }
	long long lookups() { long long rval; lock(); rval = m_lookups; unlock(); return rval; }

	// used to load dir into cache if there is a miss
	bool load_dir(LPCWSTR filepath);

	// disallow copying
	CaseCache(CaseCache const&) = delete;
	void operator=(CaseCache const&) = delete;

	CaseCache();
	virtual ~CaseCache();
};