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Re: No space left to create named semaphores
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Re: No space left to create named semaphores


  • Subject: Re: No space left to create named semaphores
  • From: "John J. Francini" <email@hidden>
  • Date: Thu, 23 Jun 2005 00:49:02 -0400

Title: Re: No space left to create named semaphores
Okay, not Tiger, but there are no such tools in Panther/Jaguar/earlier. The original poster (Tron) didn't specify which version of OS X he's doing this on.

I'm glad that this oversight has been corrected in Tiger!

However, I have the feeling from his comments that his company's systems aren't yet running Tiger.

John


I think th

At 21:30 -0700 6/22/05, Shantonu Sen wrote:
On Jun 22, 2005, at 9:24 PM, John J. Francini wrote:

The last process using the semaphore is supposed to unlink it.  Otherwise the kernel space taken up by the semaphore will remain allocated until the system is rebooted or the (unsupplied by Apple) ipcrm(8) utility is used to delete the semaphore.

Are you sure about this. My Tiger system has:
localhost:~ ssen$ type ipcrm
ipcrm is /usr/bin/ipcrm
localhost:~ ssen$ man ipcrm | head
ipcrm(1)                  BSD General Commands Manual                 ipcrm(1)

NAME
     ipcrm -- remove the specified message queues, semaphore sets, and shared
     memory segments

SYNOPSIS
     ipcrm [-q msqid] [-m shmid] [-s semid] [-Q msgkey] [-M shmkey]
           [-S semkey] ...



Shantonu

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  • Follow-Ups:
    • Re: No space left to create named semaphores
      • From: Tron Thomas <email@hidden>
References: 
 >Re: No space left to create named semaphores (From: Paul Ripke <email@hidden>)
 >Re: No space left to create named semaphores (From: Tron Thomas <email@hidden>)
 >Re: No space left to create named semaphores (From: "John J. Francini" <email@hidden>)
 >Re: No space left to create named semaphores (From: Shantonu Sen <email@hidden>)

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