Does that work on Windows? I briefly tried earlier and it didn't seem to work. IIUC Windows doesn't support Unix-style named sockets. (it does have named pipes, but the semantics are a bit different)
On Thu, Jul 7, 2016 at 1:07 PM, David Anthoff <anth...@berkeley.edu> wrote: > Ah, I had actually come up with the same solution that Amit suggested in > #7176 and am using a named socket as a lock, that seems to work for now. > > > > I’m also running into another race condition with respect to precompile, I > opened a new issue for that: > > https://github.com/JuliaLang/julia/issues/17320 > > > > Cheers, > > David > > > > *From:* julia-users@googlegroups.com [mailto:julia-users@googlegroups.com] > *On Behalf Of *Isaiah Norton > *Sent:* Thursday, July 7, 2016 6:52 AM > *To:* julia-users@googlegroups.com > *Subject:* Re: [julia-users] Pkg "threadsafe" or interprocess mutex > package > > > > See > > https://github.com/JuliaLang/julia/issues/5622 and > > https://github.com/JuliaLang/julia/issues/7176 > > > > If you are on Windows, LockFileEx is reliable and you could ccall it > yourself. Probably simpler to handle the problem at a higher level for now > though (i.e. run one script that checks installation *before* launching > your analysis jobs). > > > > > > On Wed, Jul 6, 2016 at 5:09 PM, David Anthoff <anth...@berkeley.edu> > wrote: > > Hi, > > > > I have a script that is using some packages. The script is set up such > that if the package it is trying to use is not installed, it will do a > ``Pkg.add`` to add the package before ``using`` it. > > > > This script is triggered by a third process, and it might be triggered > multiple times simultaneously, i.e. multiple instances of julia might run > the same script at the same time. Therefore the second julia instance might > issue the same ``Pkg.add`` command as the first instance, while the first > instance is not done with the ``Pkg.add`` yet. > > > > I assume the package manager per se is not set up to handle that situation > gracefully? > > > > If not, is there some package that allows me to have something like a > mutex/lock between my julia processes, so that I can guard the code section > that fiddles with packages and make sure only one julia instance at a time > runs that code? > > > > Thanks, > > David > > > > -- > > David Anthoff > > University of California, Berkeley > > > > http://www.david-anthoff.com > > > > >
