dbplus_getlock Get a write lock on a tuple intdbplus_getlock resourcerelation stringtname &warn.experimental.func; dbplus_getlock will request a write lock on the specified tuple. It will return zero on success or a non-zero error code, especially DBPLUS_ERR_WLOCKED, on failure. See also dbplus_freelock, dbplus_freerlocks, and dbplus_freealllocks.