#include <db.h>

int
DBENV->set_lk_conflicts(DB_ENV *dbenv,
    u_int8_t *lk_conflicts, int lk_nmodes);

Description

Set the locking conflicts matrix. The lk_conflicts argument is an lk_nmodes by lk_nmodes array. A non-0 value for the array element:

lk_conflicts[requested_mode][held_mode]

indicates that requested_mode and held_mode conflict. The not-granted mode must be represented by 0.

If no lk_conflicts value is specified, the conflicts array db_rw_conflicts is used; see Standard Lock Modes for a description of that array.

The DBENV->set_lk_conflicts interface may only be used to configure Berkeley DB before the DBENV->open interface is called.

The DBENV->set_lk_conflicts function returns a non-zero error value on failure and 0 on success.

Errors

EINVAL

An invalid flag value or parameter was specified.

Called after DBENV->open was called.

ENOMEM

No memory was available to copy the conflicts array.

See Also