DB_ENV->set_lk_priority()
#include <db.h>
int
DB_ENV->set_lk_priority(DB_ENV *dbenv,
u_int32_t lockerid, u_int32_t priority); Set the priority of the given locker. This value is used when resolving deadlocks, the deadlock resolution algorithm will reject a lock request from a locker with a lower priority before a request from a locker with a higher priority.
By default, all lockers are created with a priority of 100.
The DB_ENV->set_lk_priority() method may be called at any time during the life of the application.
The DB_ENV->set_lk_priority() method returns a non-zero error value on failure and 0 on success.
Parameters
lockerid
The lockerid parameter represents a locker returned by DB_ENV->lock_id().
priority
The priority parameter must be a value between 0 and 2^32-1.
Errors
The DB_ENV->set_lk_priority() method may fail and return one of the following non-zero errors:
EINVAL
An invalid flag value or parameter was specified.