Possiblly bug of cygwin1.dll
Corinna Vinschen
corinna-cygwin@cygwin.com
Mon Jan 22 09:25:28 GMT 2024
On Jan 22 12:30, Takashi Yano via Cygwin wrote:
> PATCH2: (for cygwin)
> Avoid handle leak caused when non-static pthread_once_t is initialized
> with PTHREAD_ONCE_INIT
> diff --git a/winsup/cygwin/thread.cc b/winsup/cygwin/thread.cc
> index 7bb4f9fc8..127569160 100644
> --- a/winsup/cygwin/thread.cc
> +++ b/winsup/cygwin/thread.cc
> @@ -2060,6 +2060,9 @@ pthread::once (pthread_once_t *once_control, void (*init_routine) (void))
> {
> init_routine ();
> once_control->state = 1;
> + pthread_mutex_unlock (&once_control->mutex);
> + while (pthread_mutex_destroy (&once_control->mutex) == EBUSY);
> + return 0;
> }
> /* Here we must remove our cancellation handler */
> pthread_mutex_unlock (&once_control->mutex);
I see what you're doing here. Wouldn't it be simpler, though, to do this?
diff --git a/winsup/cygwin/thread.cc b/winsup/cygwin/thread.cc
index 7bb4f9fc8341..7ec3aace395d 100644
--- a/winsup/cygwin/thread.cc
+++ b/winsup/cygwin/thread.cc
@@ -2063,6 +2063,7 @@ pthread::once (pthread_once_t *once_control, void (*init_routine) (void))
}
/* Here we must remove our cancellation handler */
pthread_mutex_unlock (&once_control->mutex);
+ while (pthread_mutex_destroy (&once_control->mutex) == EBUSY);
return 0;
}
Corinna
More information about the Cygwin
mailing list