DbEnv::lock_detect |
#include <db_cxx.h>int DbEnv::lock_detect(u_int32_t flags, u_int32_t atype, int *aborted);
The DbEnv::lock_detect method runs one iteration of the deadlock detector. The deadlock detector traverses the lock table and marks one of the participating lock requesters for rejection in each deadlock it finds.
The flags parameter is currently unused, and must be set to 0.
The atype parameter specifies which lock request(s) to reject. It must be set to one following list:
If the aborted parameter is non-NULL, the memory location to which it refers will be set to the number of lock requests that were rejected.
The DbEnv::lock_detect 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.
The DbEnv::lock_detect method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods. If a catastrophic error has occurred, the DbEnv::lock_detect method may fail and either return DB_RUNRECOVERY or throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way.