#include <db.h>
int
DB_ENV->set_lk_conflicts(DB_ENV *dbenv,
u_int8_t *conflicts, int nmodes);
Set the locking conflicts matrix.
If DB_ENV->set_lk_conflicts() is never called, a standard conflicts
array is used; see Standard Lock Modes for more information.
The DB_ENV->set_lk_conflicts() method configures a database
environment, not only operations performed using the specified
DB_ENV handle.
The DB_ENV->set_lk_conflicts() method may not be called after the
DB_ENV->open()
method is
called. If the database environment already exists when
DB_ENV->open()
is called, the
information specified to DB_ENV->set_lk_conflicts() will be ignored.
The DB_ENV->set_lk_conflicts()
method returns a non-zero error value on failure and 0 on success.
The conflicts parameter is the new locking conflicts matrix. The conflicts parameter is an nmodes by nmodes array. A non-0 value for the array element indicates that requested_mode and held_mode conflict:
conflicts[requested_mode][held_mode]
The not-granted mode must be represented by 0.
The DB_ENV->set_lk_conflicts()
method may fail and return one of the following non-zero errors:
If the method was called after DB_ENV->open() was called; or if an invalid flag value or parameter was specified.