On Sat, Jun 25, 2016 at 09:05:43PM +0300, Konstantin Belousov wrote:
> On Sat, Jun 25, 2016 at 08:43:17PM +0300, Ivan Klymenko wrote:
> > ./thr_mutex_test
> > thr_mutex_test: mutex_trylock 2: No error: 0
>
> Ok, there is a bug in my test, it must use errc(3) and not err(3). Please
> retest wth the updated code below. But I am sure that you would see
> EDEADLK (Resource deadlock avoided) error, which means that you have
> wrong, i.e. unpatched libthr, installed.
>
> For me, the output is
> sandy% ./pthread_errrecurse
> sandy% echo $?
> 0
>
Err, the updated test.
/* $Id: pthread_errrecurse.c,v 1.2 2016/06/25 18:02:54 kostik Exp kostik $ */
#include <err.h>
#include <errno.h>
#include <pthread.h>
int
main(void)
{
pthread_mutex_t m;
pthread_mutexattr_t ma;
int error;
error = pthread_mutexattr_init(&ma);
if (error != 0)
errc(1, error, "mutexattr_init");
error = pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_ADAPTIVE_NP);
if (error != 0)
errc(1, error, "mutexattr_settype");
error = pthread_mutex_init(&m, &ma);
if (error != 0)
errc(1, error, "mutex_init");
error = pthread_mutex_trylock(&m);
if (error != 0)
errc(1, error, "mutex_trylock 1");
error = pthread_mutex_trylock(&m);
if (error != EBUSY)
errc(1, error, "mutex_trylock 2");
else if (error == 0)
errx(1, "mutex_trylock 2 succeeded");
return (0);
}
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