[PATCH]: Thread safe stdio with cygwin

[Jeff Johnston]

Thomas,

  You should be using __lock_init_recursive to initialize the locks 
rather than zeroing them out.
The code in __sbprintf should probably be closing the lock after the 
call to VFPRINTF as well.

-- Jeff J.

Thomas Pfaff wrote:

>This patch adds support for thread safe stdio for Cygwin.
>
>Cygwin uses dynamic mutexes for locking, therefore it is
>necessary to:
>
>1. Initialize FILE pointers _lock properly.
>2. Destroy the lock when it is no longer needed.
>
>Regards,
>
>Thomas
>
>2004-01-12  Thomas Pfaff  <tpfaff@gmx.net>
>
>	* libc/stdio/fclose.c: Include sys/lock.h.
>	(fclose): Destroy lock when file is closed.
>	* libc/stdio/findfp.c (__sfp): Initialize file pointers _lock
>	member.
>	* libc/stdio/freopen.c: Include sys/lock.h.
>	(_freopen_r): Destroy lock when file is closed.
>	* libc/stdio/vfprintf.c (__sbprintf): Initialize file pointers
>	_lock member.
>
>  
>