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Re: Mutexes


From: Ben Pfaff
Subject: Re: Mutexes
Date: Sun, 19 Apr 2009 21:05:07 -0700
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux)

John Darrington <address@hidden> writes:

> On Sun, Apr 19, 2009 at 08:26:57PM -0700, Ben Pfaff wrote:
>      John Darrington <address@hidden> writes:
>      
>      > Any objections if I check in some thread safety changes to the lower
>      > levels, such as the attached patch ?
>      >
>      > I don't think there's going to be a multi-threaded pspp for production
>      > use any time soon, but I've been doing some experiments in order to
>      > find out what some of the issues are.
>      
>      Could we put this into a separate branch?  I'm nervous about
>      adding unneeded dependencies.
>
> It doesn't need any additional dependencies, unless you count an extra
> gnulib module as a dependency.

Won't the gnulib module will cause our binaries to link against
new libraries, e.g. libpthread on Linux?

At any rate, this will change some very cheap operations, such as
incrementing a value, into relatively expensive ones.
-- 
"Implementation details are beyond the scope of the Java virtual
 machine specification.  One should not assume that every virtual
 machine implementation contains a giant squid."
--"Mr. Bunny's Big Cup o' Java"




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