Library Version 12.1.6.0

DB_ENV->get_memory_init()
Prev | Chapter 5. The DB_ENV Handle | Next

## 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

### See Also

Database Environments and Related Methods

Prev | Up | Next
DB_ENV->get_intermediate_dir_mode() | Home | DB_ENV->get_memory_max()