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DbEnv::set_lk_conflicts |
#include <db_cxx.h>int DbEnv::set_lk_conflicts(u_int8_t *conflicts, int nmodes);
int DbEnv::get_lk_conflicts(const u_int8_t **lk_conflictsp, int *lk_modesp);
Set the locking conflicts matrix.
If DbEnv::set_lk_conflicts is never called, a standard conflicts array is used; see Standard Lock Modes for more information.
The DbEnv::set_lk_conflicts method configures a database environment, not only operations performed using the specified DbEnv handle.
The DbEnv::set_lk_conflicts method may not be called after the DbEnv::open method is called. If the database environment already exists when DbEnv::open is called, the information specified to DbEnv::set_lk_conflicts will be ignored.
The DbEnv::set_lk_conflicts method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.
conflicts[requested_mode][held_mode]
The not-granted mode must be represented by 0.
The DbEnv::set_lk_conflicts method may fail and throw DbException, encapsulating one of the following non-zero errors, or return one of the following non-zero errors:
If the conflicts array could not be copied, the DbEnv::set_lk_conflicts method will fail and either return ENOMEM or throw a DbMemoryException.
The DbEnv::get_lk_conflicts method returns the current conflicts array.
The DbEnv::get_lk_conflicts method may be called at any time during the life of the application.
The DbEnv::get_lk_conflicts method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.
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