Re: [LTP] [PATCH]pthread_cond_broadcast/1-2.c

[Wanlong Gao <gaowanlong@cn.fujitsu.com>]

On 07/03/2012 03:17 PM, DAN LI wrote:
> Case pthread_cond_broadcast/1-2.c trys to create as many threads and 
> processes as possible which will wait on a condition variable.
> 
> Unfortunately,if some thread or child process waits overtime(180s) 
> since maybe memory is not enough or whatever, it will call FAILED() and 
> exit without unlocking a global mutex.
> 
> Above-mentioned matter leads to a deadlock when parent process trys to
> pthread_mutex_lock the global mutex,and obviously status FAILED cannot 
> be reahed by parent process.
> 
> This patch fixes the deadlock problem.
> 

pushed, thanks,

Wanlong Gao

> Signed-off-by: DAN LI <li.dan@cn.fujitsu.com>
> ---
>  .../interfaces/pthread_cond_broadcast/1-2.c        |    6 +++++-
>  1 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c b/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c
> index af826ba..f6ad9df 100644
> --- a/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c
> +++ b/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c
> @@ -189,9 +189,13 @@ static void *child(void *arg)
>  			timed, td->predicate, ret);
>  		#endif
>  	} while ((ret == 0) && (td->predicate == 0));
> -	if (ret == ETIMEDOUT)
> +	if (ret == ETIMEDOUT) {
> +		ret = pthread_mutex_unlock(&td->mtx);
> +		if (ret != 0)
> +			UNRESOLVED(ret, "Failed to unlock the mutex.");
>  		FAILED("Timeout occured. This means a cond signal was lost -- "
>  		       "or parent died");
> +	}
>  	if (ret != 0)
>  		UNRESOLVED(ret, "Failed to wait for the cond");
>  
> -- 1.7.7.2 
> 
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and 
> threat landscape has changed and how IT managers can respond. Discussions 
> will include endpoint security, mobile security and the latest in malware 
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Ltp-list mailing list
> Ltp-list@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/ltp-list
> 



------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Ltp-list mailing list
Ltp-list@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ltp-list