Whether sqlitedatabase is thread safe or not

Database operations are essentially manipulating database files.

Before Android 2.3.7, the Insertwithonconflict method had lock () before and after obtaining the code block of the Sqlitestatement execution database ... unlock ()}, So to the same database, we have done the mutual exclusion between different threads;

Above the Abdroid 4.0, the source code removed the lock (), for the same database, each thread will hold a sqlitestatement, each thread holds a unique sqlitesession, and a session only belongs to one thread , which guarantees that the transaction is concurrent. Each thread is asynchronous in the database layer, and finally the synchronization control that is done at the native level

　　　

Whether sqlitedatabase is thread safe or not