Spinlocks on SGI's

I contributed the first working s_lock.c code for the SGI's over three
years ago (using the test_and_set library calls). It's been working
for me ever since in a heavy multi-user environment. Please don't
change it unless there's an overwhelming reason.

Also, the GNU compiler systems works poorly on SGI's. In this
environment, you need to stick to the SGI provided compilers. Once you
get used to them, they work fairly well.

Sincerely,
Bob

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| Robert E. Bruccoleri, Ph.D.      | Phone: 609 737 6383                |
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