Re: How to make this program more efficient?

SUBJECT: How to make this program more efficient?

In my program, a thread will check update from server
periodically and generate a stl::map for other part of this
program to read data from. Let's name the update method as
doUpdate and stl::map read methods as getData and copyData.
Since stl::map is not thread-safe, we should do
synchronization by ourselves. A usable solution is to
create a boost::mutex::scoped_lock object in all above
methods to make the access to all methods synchronized. But
since the doUpdate method will be executed periodically and
the interval may be 1 hour or longer, while all other parts
can only read the stl::map, the above solution may do
synchronization too much. We only need synchronization on
all methods when we are doUpdating.