DB_TXN->id |
#include <db.h>u_int32_t DB_TXN->id(DB_TXN *tid);
The DB_TXN->id function returns the unique transaction id associated with the specified transaction. Locking calls made on behalf of this transaction should use the value returned from DB_TXN->id as the locker parameter to the DB_ENV->lock_get or DB_ENV->lock_vec calls.