Want ps with symbolic wait channel info

[Chris Torek]

Actually, BRL's csleep (commented sleep) makes this ridiculously easy:
just print p->p_slmsg if (p->p_wchan && p->p_slmsg).  It isn't the same
as what you'd get if you scanned the /vmunix symbol table ala adb, but
it works pretty well.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 4251)
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