Function lmdb_sys::mdb_env_set_userctx

pub unsafe extern "C" fn mdb_env_set_userctx(
    env: *mut MDB_env, 
    ctx: *mut c_void
) -> c_int

@brief Set application information associated with the #MDB_env.

@param[in] env An environment handle returned by #mdb_env_create() @param[in] ctx An arbitrary pointer for whatever the application needs. @return A non-zero error value on failure and 0 on success.