[pypy-svn] r48931 - pypy/dist/pypy/module/thread

[arigo at codespeak.net]

Author: arigo
Date: Thu Nov 22 17:48:27 2007
New Revision: 48931

Modified:
   pypy/dist/pypy/module/thread/gil.py
Log:
Fragile code to preserve the errno...


Modified: pypy/dist/pypy/module/thread/gil.py
==============================================================================
--- pypy/dist/pypy/module/thread/gil.py	(original)
+++ pypy/dist/pypy/module/thread/gil.py	Thu Nov 22 17:48:27 2007
@@ -12,6 +12,7 @@
 from pypy.interpreter.miscutils import Action
 from pypy.module.thread.threadlocals import OSThreadLocals
 from pypy.rlib.objectmodel import invoke_around_extcall
+from pypy.rlib.rposix import get_errno, set_errno
 
 class GILThreadLocals(OSThreadLocals):
     """A version of OSThreadLocals that enforces a GIL."""
@@ -83,10 +84,16 @@
     pass
 spacestate = SpaceState()
 
+# Fragile code below.  We have to preserve the C-level errno manually...
+
 def before_external_call():
     # this function must not raise, in such a way that the exception
     # transformer knows that it cannot raise!
+    e = get_errno()
     spacestate.GIL.release()
+    set_errno(e)
 
 def after_external_call():
+    e = get_errno()
     spacestate.GIL.acquire(True)
+    set_errno(e)