Function init_with_pool 

pub fn init_with_pool(
    database: Database,
    pool: Arc<ThreadPool>,
) -> Result<(TxpoolReadHandle, TxpoolWriteHandle), TxPoolError>

Initialise a database and return a read/write handle to it.

Once the returned handles are Drop::droped, the reader thread-pool and writer thread will exit automatically.

Errors

This will forward the error if the opening failed.