Horton

Re: [HACKERS] Re: sched_yield()

Tom Samplonius <tom@sdf.com>

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From: Tom <tom@sdf.com>
To: Mattias Kregert <matti@algonet.se>
Cc: The Hermit Hacker <scrappy@hub.org>, Bruce Momjian <maillist@candle.pha.pa.us>, Massimo Dal Zotto <dz@cs.unitn.it>, hackers@postgresql.org
Date: 1998-03-22T06:32:15Z
Lists: pgsql-hackers 
On Sun, 22 Mar 1998, Mattias Kregert wrote:

> Except from Linux, I can find references to sched_yield() in LynxOS,
> DECthreads thread library, AIX 4.1 and up (libc), Solaris (thread.h
> (c)1994 Sun
> Microsystems), Unix98, GNU, C EXECUTIVE(r) and PSX(tm) real time kernels
> ...
> This is just a quick search.

  This seems to be part of Posix threads, which means that sched_yield
should only be callable by a thread....  I'm surprised that normal
processes can call sched_yield.  In fact, in most of the environments
you've mentioned, it certainly can't be used outside a thread.

Tom