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Re: cygipc semaphores not persistent?
- From: Mark Paulus <mark dot paulus at mci dot com>
- To: "cygwin at cygwin dot com" <cygwin at cygwin dot com>
- Date: Thu, 19 Jun 2003 12:39:46 -0600
- Subject: Re: cygipc semaphores not persistent?
Are you running the ipcdaemon process? At one time
the cygipc libraries required the ipcdaemon process
to manage the global objects. I thought I read something
that the ipc-daemon is going away, and being incorporated
into the cygwin architecture, but I did not gather that it had
happened yet. That may be a misunderstanding on my
On Thu, 19 Jun 2003 11:49:30 -0400, Joe Buehler wrote:
>I am attempting to use cygipc for its semaphore functionality
>in porting some existing UNIX code.
>It would appear that semaphores are not persistent?
>The code depends on the UNIX semantic of a semaphore being a global
>system object that exists regardless of whether any processes are
>currently using it.
>I have processes coming and going, using the semaphore to mediate
>access to a disk-based queue. I have been debugging the code,
>and it appears that the semaphore is destroyed when no process has
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