[patch, fortran, gcc] PR35063 [Regression wrt g77] I/O leaks handles/memory on Windows XP

[Jerry DeLisle]

Jerry DeLisle wrote:
> Hi all,
> 
> This patch fixes this bug.  Danny Smith provided the portion that added 
> the needed CloseHandle to destroy the mutex properly.  I developed the 
> portion in unit.c that uses this, with his suggestions.
> 
> Regression tested on x86-64, tested on Cygwin that it fixes both cases 
> in comments 1 and 7.  Test likewise by Mikko on mingw.
> 
> I think this should get into 4.3.
> 
> Ok to commit?  I need a gcc maintainer to approve as well.
> 
> Regards,
> 
> Jerry
> 
> 2008-02-08  Danny Smith  <dannysmith@users.sourceforge.net>
> 
>     PR gcc/35063
>     * gthr-win32.h (__gthread_mutex_destroy_function): New function
>     to CloseHandle after unlocking to prevent accumulation of handle
>     count.
> 
> 2008-02-08  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
>     PR libfortran/35063
>     * io/unit.c (destroy_unit_mutex): New function that uses
>     __gthread_mutex_destroy_function or pthread_mutex_destroy after
>     unlocking and before free_mem for final closure of I/O unit.
>     (delete_root): Use new function.
>     (free_internal_unit): Likewise.
>     (close_unit_1): Likewise.
> 
Helps if I attach the patch.

Jerry
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