Berkeley DB

db_env_set_tas_spins

						#include <db.h>
						int
						db_env_set_tas_spins(u_int32_t tas_spins);
					

Description

Specify that test-and-set mutexes should spin tas_spins times without blocking. The value defaults to 1 on uniprocessor systems and to 50 times the number of processors on multiprocessor systems.

The db_env_set_tas_spins interface affects the entire application, not a single database or database environment.

Although the db_env_set_tas_spins interface may be used to configure Berkeley DB at any time during the life of the application, it should normally be called before making any calls to the db_env_create or db_create functions.

The db_env_set_tas_spins function returns a non-zero error value on failure and 0 on success.

The database environment’s ...