Re: cvs commit: src/lib/libc_r/uthread pthread_private.h uthread_yield.c

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From
Nate Williams <nate@mt.sri.com>
Date
7 Mar 1998 21:36:39
Subject
Re: cvs commit: src/lib/libc_r/uthread pthread_private.h uthread_yield.c
Message-ID
199803080536.WAA06540@mt.sri.com

Replies

[ Hide this part ]
> > > that it will all just come out in the wash. Kernel threads aren't
> > > light weight, though.
> >
> > If kernel threads aren't light-weight, then what differentiates them
> > from processes?
>
> Shared address space.

You can do that easily enough know with mmap'd files, and or SYSV shmem.
It would seem to me that heavy-weight threads don't buy you anything
that you can't already do know. Heck, someone could write up a library
that does that already, making the details hidden like the user-land
pthreads library.

It seems to me we're checking off a box on someone's list of features
w/out any regard to the usefulness of that feature. :(




Nate

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