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Re: [Qemu-devel] [RFC PATCH] tests: replace rem = sleep(time) with g_tim


From: Greg Kurz
Subject: Re: [Qemu-devel] [RFC PATCH] tests: replace rem = sleep(time) with g_timer
Date: Fri, 11 Jan 2019 19:32:54 +0100

On Fri, 11 Jan 2019 16:41:41 +0100
Paolo Bonzini <address@hidden> wrote:

> On 11/01/19 16:28, Alex Bennée wrote:
> >> Why not g_usleep?  It already does a while loop around nanosleep (which
> >> returns the remaining time in the wait, like select but unlike sleep and
> >> poll).  
> > Yeah I'm testing that now. However I have managed to trigger:
> > 
> >   ERROR:tests/test-qht-par.c:20:test_qht: assertion failed (rc == 0): 
> > (35584 == 0)  
> 
> I think that's a good old SIGSEGV (0x8B00).
> 

Hmmm... system() returns a "wait status" that can  be examined using the
macros described in waitpid(2), and we have:

/* If WIFEXITED(STATUS), the low-order 8 bits of the status.  */
#define __WEXITSTATUS(status)   (((status) & 0xff00) >> 8)

So this rather looks like a 139 exit status to me... Not sure how
this can happen though.

> Paolo
> 




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