DbEnv::memp_fcreate()
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## DbEnv::memp_fcreate()

    #include <db_cxx.h>

    int
    DbEnv::memp_fcreate(DbMpoolFile **dbmfp, u_int32_t flags);

The `DbEnv::memp_fcreate()` method creates a DbMpoolFile structure that is the handle for a Berkeley DB cache (that is, a shared memory buffer pool file). A pointer to this structure is returned in the memory to which dbmfp refers. Calling the DbMpoolFile::close() method will discard the returned handle.

The `DbEnv::memp_fcreate()` 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.

### Parameters

#### dbmfp

The `DbEnv::memp_fcreate()` method returns a pointer to a mpool structure in dbmfp.

#### flags

The flags parameter is currently unused, and must be set to 0.

### Class

DbEnv, DbMpoolFile

### See Also

Memory Pools and Related Methods

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