Messages in this thread | | | Date | Sun, 4 May 2003 09:25:14 -0400 (EDT) | From | Mikhail Kruk <> | Subject | Re: fcntl file locking and pthreads |
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> Mikhail Kruk wrote: > > on 2.4 kernels fcntl-based file locking does not work with > > clone-based threads as expected (by me): two threads of the same process > > can acquire exclusive lock on a file at the same time. > > flock()-based locks work as expected, i.e. only one thread can have an > > exclusive lock at a time. > > Is this true even when _not_ setting CLONE_FILES?
CLONE_FILES is an argument to clone(), I'm using pthreads and I don't know if LinuxThreads implementation of pthreads gives me control of how clone is called. Anyway, if I understand what CLONE_FILES does, it should be given to clone, because threads do have to be able to share file descriptors, probably. But not the locks!
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