DN576759047

Subject: Re: Tcl 8.2.3, Threads, HP-UX 10.20 - DN [1]

csijgd@cs.com (CSi JGD) - 24 Jan 2000 - comp.lang.tcl

 >
 >David Woodbury wrote:
 >> Which threading package should I use for Tcl 8.2.3 and HP-UX 10.20.
 >> I've been trying DCE threads without much luck.  Is there a separate
 >> distribution I need to obtain from HP?
 >
 >Tcl assumes standard pthreads (POSIX threads), ones that work.
 >It is possible to swap out the threading model, but it's not
 >recommended unless you are familiar with threading models.
 >

 Hello,

 HP10 uses an early form of pthreads, often called "Draft4".  It's a library
 implementation of threads, i.e., the threads are not actually scheduled by the
 kernel which can  lead to poor performance in some I/O-bound applications.

 Anyway,  you can use threaded Tcl8.2.3 with HP10 by replacing the Tclp thread
 routines directly.  The AOLserver Web server does this and the  code is
 available  in OpenSource for you to compare. Info at:

 http://www.aolserver.com

 Check out the file nsd/tclNsThread.c which replaces
 tcl8.2.3/unix/tclUnixThrd.c.

 -Jim