Marcin 'Qrczak' Kowalczyk wrote:
In unix the traditional way to do this is to use a directory. Each process/threadBen Rudiak-Gould <[EMAIL PROTECTED]> writes:
is there *any* way to get, without an exploitable race condition,
two filehandles to the same file which don't share a file pointer?
opens its own file... and you have some kind of master index/ordering file to
keep track of which file is doing what (for example Highly parallel mail software).
At the end of the day IO is serial by nature (to one device anyway), so the way to
do this into one file is to have one thread that reads and writes, and to 'send'
read and write requests over channels from the threads that need the work
done... Effectively the channels serialise the requests. This has the added
advantage that is guarantees the transactional itegrity of the IO (for example
database software)
Keean. _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
