Can semaphore survive process ?

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#1731

From: Ernst Kloecker
Date: Thu, 05 Nov 1992 16:08

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Hi,

I want to use semaphores to protect critical regions in a multi tasking
application. A problem is that these tasks are only started when an external
event occurs (phone rings) and they are stopped by another external event
(hang up). Is it possible to establish semaphores which stay in effect as
long as the whole application (which consistes of sveral processes) is
running ?

Could I accomplish that by creating these semaphores in a "semaphore
manager process" which could also fulfill a watchdog function ?

Or could this kind of semaphore be created in shared memory ?

This question applies to both OS/2 1.3 and OS/2 2.0.


Thanks for any info, Ernst.
--

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Ernst Kloecker      phone: ++49-30-6181635      e-mail: ernst@cs.tu-berlin.de
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Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!uwm.edu!spool.mu.edu!sol.ctr.columbia.edu!ira.uka.de!math.fu-berlin.de!mailgzrz.TU-Berlin.DE!cs.tu-berlin.de!ernst
From: ernst@opal.cs.tu-berlin.de (Ernst Kloecker)
Subject: Can semaphore survive process ?
Message-ID: <1992Nov5.160828.385@cs.tu-berlin.de>
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Organization: Techn. University of Berlin, Germany
Date: Thu, 5 Nov 1992 16:08:28 GMT
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