sqlite3OsUnlock  10736 ext/sqlite3/libsqlite/sqlite3.c SQLITE_PRIVATE int sqlite3OsUnlock(sqlite3_file*, int);
sqlite3OsUnlock  42727 ext/sqlite3/libsqlite/sqlite3.c     rc = pPager->noLock ? SQLITE_OK : sqlite3OsUnlock(pPager->fd, eLock);