On 10/24/2012 02:43 PM, Jan Stancek wrote: > > > ----- Original Message ----- >> From: "Wanlong Gao" <[email protected]> >> To: "Om Prakash PAL" <[email protected]> >> Cc: [email protected] >> Sent: Wednesday, 24 October, 2012 2:45:47 AM >> Subject: Re: [LTP] Regarding shmat01 syscall test >> >> On 10/23/2012 06:05 PM, Om Prakash PAL wrote: >>> >>> >>> -----Original Message----- >>> From: Wanlong Gao [mailto:[email protected]] >>> Sent: Tuesday, October 23, 2012 3:07 PM >>> To: Om Prakash PAL >>> Cc: [email protected] >>> Subject: Re: [LTP] Regarding shmat01 syscall test >>> >>> On 10/23/2012 05:24 PM, Om Prakash PAL wrote: >>>> Hi, >>>> >>>> I am working on syscall test: shmat01.c >>>> >>>> I have some confusion: >>>> >>>> >>>> >>>> In setup() : it is allocating shared memory by shmget() and then >>>> attaching by shmat() and after that detaching the attached >>>> address (i.e. shmdt()) >>>> >>>> >>>> >>>> if (shmdt((const void *)base_addr) == -1) { >>>> >>>> tst_brkm(TBROK, cleanup, "Couldn't detach shared >>>> memory"); >>>> >>>> } >>>> >>>> >>>> >>>> And again in main function it is using same "base_addr" as >>>> attaching address, >>>> >>>> >>>> >>>> addr = shmat(*(TC[i].shmid), base_addr+TC[i].offset, >>>> >>>> TC[i].flags); >>>> >>>> how can we ensure(100%) that base_addr (virtual) will be free till >>>> this point for attaching?. >>> >>> Maybe we can't, but I didn't see any fail on this. Did you see any >>> testing failure here? >>> >>> Yes, I got some failure and the reason of failure is : the address >>> at which we want to attach is busy. >> >> OK, please feel free to send a patch, or can you tell us how to >> reproduce it? > > I recall I could reproduce it, if I added single printf: > http://article.gmane.org/gmane.linux.ltp/16480
Do you get a solution? Send out a patch? Thanks, Wanlong Gao > > Regards, > Jan > ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
