DB_ENV->get_memory_init()

#include <db.h>

int
DB_ENV->get_memory_init(DB_ENV *dbenv, DB_MEM_CONFIG type, 
                        u_int32_t *countp);

The DB_ENV->get_memory_init() method returns the number of objects to allocate and initialize when an environment is created. The count is returned for a specific named structure. The count for each structure is set using the DB_ENV->set_memory_init() method.

The DB_ENV->get_memory_init() method may be called at any time during the life of the application.

The DB_ENV->get_memory_init() method returns a non-zero error value on failure and 0 on success.

Parameters

type

The struct parameter identifies the structure for which you want an object count returned. It must be one of the following values:

DB_MEM_LOCK

Initialize locks. A thread uses this structure to lock a page (or record for the QUEUE access method) and hold it to the end of a transactions.
DB_MEM_LOCKOBJECT

Initialize lock objects. For each page (or record) which is locked in the system, a lock object will be allocated.
DB_MEM_LOCKER

Initialize lockers. Each thread which is active in a transactional environment will use a locker structure either for each transaction which is active, or for each non-transactional cursor that is active.
DB_MEM_LOGID

Initialize the log fileid structures. For each database handle which is opened for writing in a transactional environment, a log fileid structure is used.
DB_MEM_TRANSACTION

Initialize transaction structures. Each active transaction uses a transaction structure until it either commits or aborts.
DB_MEM_THREAD

Initialize thread identification structures. If thread tracking is enabled then each active thread will use a structure. Note that since a thread does not signal the BDB library that it will no longer be making calls, unused structures may accumulate until a cleanup is triggered either using a high water mark or by running DB_ENV->failchk().

countp

The countp parameter references memory into which the object count for the specified structure is copied.

Class

DB_ENV