[PATCH] Cygwin: pty: Add missing CloseHandle() calls.

Corinna Vinschen corinna-cygwin@cygwin.com
Mon Jan 13 15:56:00 GMT 2020


Hi Takashi,

On Jan  1 15:48, Takashi Yano wrote:
> ---
>  winsup/cygwin/fhandler_tty.cc | 22 ++++++++++++++++++++--
>  1 file changed, 20 insertions(+), 2 deletions(-)
> 
> diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
> index 65b12fd6c..23156f977 100644
> --- a/winsup/cygwin/fhandler_tty.cc
> +++ b/winsup/cygwin/fhandler_tty.cc
> @@ -2242,11 +2242,27 @@ fhandler_pty_master::close ()
>  	  /* Terminate helper process */
>  	  SetEvent (get_ttyp ()->h_helper_goodbye);
>  	  WaitForSingleObject (get_ttyp ()->h_helper_process, INFINITE);
> +	  CloseHandle (get_ttyp ()->h_helper_goodbye);
> +	  CloseHandle (get_ttyp ()->h_helper_process);
>  	  /* FIXME: Pseudo console can be accessed via its handle
>  	     only in the process which created it. What else can we do? */
>  	  if (master_pid_tmp == myself->pid)
> -	    /* Release pseudo console */
> -	    ClosePseudoConsole (get_pseudo_console ());
> +	    {
> +	      /* ClosePseudoConsole() seems to have a bug that one
> +		 internal handle remains opened. This causes handle leak.
> +		 This is a workaround for this problem. */
> +	      typedef struct
> +	      {
> +		HANDLE hWritePipe;
> +		HANDLE hConDrvReference;
> +		HANDLE hConHostProcess;
> +	      } HPCON_INTERNAL;

Can you please move this struct to some header?  Even if it's not a
really close match, maybe ntdll.h works best, combined with a short
comment what this is about...


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
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