walShmBarrier    49554 ext/sqlite3/libsqlite/sqlite3.c   walShmBarrier(pWal);
walShmBarrier    50887 ext/sqlite3/libsqlite/sqlite3.c   walShmBarrier(pWal);
walShmBarrier    51116 ext/sqlite3/libsqlite/sqlite3.c     walShmBarrier(pWal);
walShmBarrier    51203 ext/sqlite3/libsqlite/sqlite3.c     walShmBarrier(pWal);