[Python-checkins] CVS: python/dist/src/Misc NEWS,1.351,1.352

[Tim Peters]

Update of /cvsroot/python/python/dist/src/Misc
In directory usw-pr-cvs1:/tmp/cvs-serv21290/python/Misc

Modified Files:
	NEWS 
Log Message:
New tempfile and os.open() gimmicks for Windows.


Index: NEWS
===================================================================
RCS file: /cvsroot/python/python/dist/src/Misc/NEWS,v
retrieving revision 1.351
retrieving revision 1.352
diff -C2 -d -r1.351 -r1.352
*** NEWS	2002/01/12 11:27:42	1.351
--- NEWS	2002/02/01 00:52:29	1.352
***************
*** 27,31 ****
    passed in.
  
! - gettext.translation has an optional fallback argument, and 
    gettext.find an optional all argument. Translations will now fallback
    on a per-message basis.
--- 27,31 ----
    passed in.
  
! - gettext.translation has an optional fallback argument, and
    gettext.find an optional all argument. Translations will now fallback
    on a per-message basis.
***************
*** 59,62 ****
--- 59,85 ----
  
  Windows
+ 
+ - New tempfile.TemporaryFile implementation for Windows:  this doesn't
+   need a TemproraryFileWrapper wrapper anymore, and should be immune
+   to a nasty problem:  before 2.3, if you got a temp file on Windows, it
+   got wrapped in an object whose close() method first closed the
+   underlying file, then deleted the file.  This usually worked fine.
+   However, the spawn family of functions on Windows create (at a low C
+   level) the same set of open files in the spawned process Q as were
+   open in the spawning process P.  If a temp file f was among them, then
+   doing f.close() in P first closed P's C-level file handle on f, but Q's
+   C-level file handle on f remained open, so the attempt in P to delete f
+   blew up with a "Permission denied" error (Windows doesn't allow
+   deleting open files).  This was surprising, subtle, and difficult to
+   work around.
+ 
+ - The os module now exports all the symbolic constants usable with the
+   low-level os.open() on Windows:  the new constants in 2.3 are
+   O_NOINHERIT, O_SHORT_LIVED, O_TEMPORARY, O_RANDOM and O_SEQUENTIAL.
+   The others were also available in 2.2:  O_APPEND, O_BINARY, O_CREAT,
+   O_EXCL, O_RDONLY, O_RDWR, O_TEXT, O_TRUNC and O_WRONLY.  Contrary
+   to Microsoft docs, O_SHORT_LIVED does not seem to imply O_TEMPORARY
+   (so specify both if you want both; note that neither is useful unless
+   specified with O_CREAT too).
  
  Mac