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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: Shantonu Sen <email@hidden>
  • Date: Wed, 22 Jun 2005 21:30:31 -0700


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: "John J. Francini" <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>)

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