_SHM_RDLCK       36860 ext/sqlite3/libsqlite/sqlite3.c       rc = winShmSystemLock(pShmNode, _SHM_RDLCK, WIN_SHM_DMS, 1);
_SHM_RDLCK       37006 ext/sqlite3/libsqlite/sqlite3.c         rc = winShmSystemLock(pShmNode, _SHM_RDLCK, ofst+WIN_SHM_BASE, n);