On 06/28/2011 08:25 PM, Henry Bausley wrote:
>
> Using the program below the used main heap continues to grow forever.
>
> int main(void)
> {
> sem_t *mutex;
> mutex = sem_open(SEM_NAME,O_CREAT,0644,1);
> sem_close(mutex);
> sem_unlink(SEM_NAME);
> return 0;
> }
>
> I am using xenomai 2.5.6 with the ipipe-2.6.35.9-powerpc-2.12-02
> kernel. Below you can see the used heap continually grow when
> executing the above program.
>
Should be fixed with the following patch:
diff --git a/ksrc/skins/posix/syscall.c b/ksrc/skins/posix/syscall.c
index 3c7f7ee..c9e84a6 100644
--- a/ksrc/skins/posix/syscall.c
+++ b/ksrc/skins/posix/syscall.c
@@ -718,17 +718,20 @@ static int __sem_close(struct pt_regs *regs)
usm = assoc2usem(assoc);
- if ((closed = (--usm->refcnt == 0)))
+ err = sem_close(&sm.native_sem);
+
+ if (!err && (closed = (--usm->refcnt == 0)))
pse51_assoc_remove(&pse51_queues()->usems,
(u_long)sm.shadow_sem.sem);
- err = sem_close(&sm.native_sem);
-
xnlock_put_irqrestore(&pse51_assoc_lock, s);
if (err)
return -thread_get_errno();
+ if (usm->refcnt == 0)
+ xnfree(usm);
+
return __xn_safe_copy_to_user((void __user *)__xn_reg_arg2(regs),
&closed, sizeof(int));
}
>
>
>
>
>
>
>
> Outbound scan for Spam or Virus by Barracuda at Delta Tau
>
>
> _______________________________________________
> Xenomai-help mailing list
> [email protected]
> https://mail.gna.org/listinfo/xenomai-help
>
--
Gilles.
_______________________________________________
Xenomai-help mailing list
[email protected]
https://mail.gna.org/listinfo/xenomai-help
