single start thread

基本解释

If the SQLITE_OPEN_FULLMUTEX flag is set then the database connection opens in the serialized threading mode unless single-thread was previously selected at compile-time or start-time.
如果設置了SQLITE_OPEN_FULLMUTEX ，那麽數據庫連接以串行線程模式打開，除非之前在編譯期或開始時選擇了單線程。
If the SQLITE_OPEN_NOMUTEX flag is set, then the database connection opens in the multi-thread threading mode as long as the single-thread mode has not been set at compile-time or start-time.
如果設置了SQLITE_OPEN_NOMUTEX，衹要沒有在編譯期或開始時設置單線程模式，數據庫連接就以多線程線程模式打開。