Re: Finding whether a process blocked while executing a syscall

From: bert hubert (ahu_at_ds9a.nl)
Date: 12/30/04

  • Next message: Angelo G. Devine: "Finished" 
    Date:	Thu, 30 Dec 2004 23:13:56 +0100
To: selvakumar nagendran <kernelselva@yahoo.com>

    On Wed, Dec 29, 2004 at 08:52:36PM -0800, selvakumar nagendran wrote:

    > A process can be blocked while executing a syscall
    > in the light of some resources needed. Now, I want to
    > find out whether a process has been blocked while
    > executing a particular syscall or it has finished it
    > successfully? If it was blocked I want to perform some
    > operation on it. Can anyone help me regarding this?

    This question is fraught with difficulty. For one thing, many many system
    calls will block for a short time, which you would probably not describe as
    'blocked', even though this was true for a few milliseconds.

    You did not entirely specify why you want to do this, there may be better
    solutions to your problem.

    bert 

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