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Date:      Fri, 12 Jul 2013 14:52:01 GMT
From:      Petr Salinger <Petr.Salinger@seznam.cz>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   threads/180496: clock_gettime() does not return CPU-time for zombie processes
Message-ID:  <201307121452.r6CEq1YX043656@oldred.freebsd.org>
Resent-Message-ID: <201307121500.r6CF00Zr024107@freefall.freebsd.org>

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>Number:         180496
>Category:       threads
>Synopsis:       clock_gettime() does not return CPU-time for zombie processes
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-threads
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jul 12 15:00:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Petr Salinger
>Release:        HEAD
>Organization:
>Environment:
GNU/kFreeBSD 10.0-0-amd64 
>Description:
This is follow up to
http://www.freebsd.org/cgi/query-pr.cgi?pr=168417

Our testsuite expects, that clock id created by
clock_getcpuclockid() is valid also in time frame 
after process exit before its reap by parent.

http://sourceware.org/git/?p=glibc.git;a=blob;f=rt/tst-cpuclock1.c;hb=HEAD

live PID 46968 clock ffffffffc000b778 resolution 0.000001000
live PID 46968 before sleep => 0.000000000
live PID 46968 after sleep => 0.506846000
clock_nanosleep not supported for other process clock: Operation not supported
clock_gettime on dead PID 46968 clock ffffffffc000b778 => Invalid argument

It is rather reasonable expectation.

Please allow getting of used time also for zombie processes.


>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:



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