On 24-Apr-2002 Seigo Tanimura wrote: > I am now working on locking down a socket. (I have heard that Jeffrey > Hsu is also doing that, but I have never seen his patch. Has anyone > seen that?) My first milestone patch is now available at: > > > http://people.FreeBSD.org/~tanimura/patches/socket_milestone1.diff.gz > > > The works I have done so far are: > > > - Determine the lock required to protect each of the members in struct > socket. > > - Add mutexes to each of the sockbufs in a socket as BSD/OS does. > > - Lock down so_count, so_options, so_linger and so_state. > > - Add a global mutex socq_lock to protect the connection queues of a > listening socket. Lock socq_lock to lock two sockets at once, > followed by enqueuing or dequeuing a socket, or moving a socket across > queues. socq_lock is not an sx lock because we usually have to lock > two sockets to modify them.
Do you actually lock two sockets at once or do you lock one at a time while holding socq_lock. If you do lock two at once, what is the defined locking order? -- John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
