Example of how to use boost upgradeable mutexes

Question

I have a multithreaded server application that needs mutex locks over some shared memory.

The shared memory are basically sTL maps etc.

Much of the time I\'m

Answer 1

You don't want boost-interprocess if you're just using a single process. As the library name implies, it's used for Inter-Process Communication (IPC). You most likely want to use the boost-thread mutex and locking concepts.

#include   
#include   

int
main()
{
    typedef boost::shared_mutex Mutex;
    typedef boost::shared_lock ReadLock;
    typedef boost::unique_lock WriteLock;
    Mutex mutex;

    {
        // acquire read lock
        ReadLock read( mutex );

        // do something to read resource
    }

    {
        // acquire write lock
        WriteLock write( mutex, boost::adopt_lock_t() );

        // do something to write resource
    }
}

there's a post on the boost mailing list explaining this as well.