[omniORB] Returning a cache sequence

[Matthew Berry]

Hi,

I have defined a structure Customer and an operation:

    sequence<Customer> getCustomers()

Now when I initialise the "in-memory-database" server I read all the
customers into a sequence "cacheCustomers"

What I what to know is the most efficient way of returning (a copy of) the
customers in the above operation?

Option 1, using the sequence copy constructor:

    return new CustomerSeq(cacheCustomers)

Option 2, using the data constructor (which H&V advises against, but I think
is more efficient):

    return new CustomerSeq(cacheCustomers.length(), cacheCustomers.length(),
cacheCustomers.get_buffer(), 0)

Are both of these options thread-safe? Do I need to protect access to
"cacheCustomers", because I could potentially two clients requesting the
customer list simultaneously?

TiA,

Matthew