Hi, Here is the URL http://www.moses.uklinux.net/patches/lki-5.html Regards Dharmender Rai --- MAASK Group <maask12345@hotmail.com> wrote: > Hi, > > I have been trying to get the shared memory and > IPC part of the > Linux-2.4.19 kernel... Does anyone know the > significance of the 'seq' and > 'seq_max' variables in the following ipc_ids > structure?? Also what are the > values it takes and when is it initialised?? > > struct ipc_ids { > int size; > int in_use; > int max_id; > unsigned short seq; <--------- ?? > unsigned short seq_max; <--------- ?? > struct semaphore sem; > spinlock_t ary; > struct ipc_id* entries; > }; > > Also, I could not understand the significance of the > ipc_buildid() function > which converts the id to a bigger value (both the > input id and the output id > to the function are unique which is a sufficient > requirement of the id). > This functiona makes use of the 'seq' and > SEQ_MULTIPLIER (whose value is > 32768) to generate this bigger value. > > Could it be made to work without this buildid() > function?? > > Thanks in advance, > Asmita from MAASK group > > > > > _________________________________________________________________ > Get a speedy connection with MSN Broadband. Join > now! > http://resourcecenter.msn.com/access/plans/freeactivation.asp > > -- > Kernelnewbies: Help each other learn about the Linux > kernel. > Archive: > http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
