Merged revisions 66670,66681,66688,66696-66699 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r66670 | georg.brandl | 2008-09-28 15:01:36 -0500 (Sun, 28 Sep 2008) | 2 lines
Don't show version in title.
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r66681 | georg.brandl | 2008-09-29 11:51:35 -0500 (Mon, 29 Sep 2008) | 2 lines
Update nasm location.
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r66688 | jesse.noller | 2008-09-29 19:15:45 -0500 (Mon, 29 Sep 2008) | 2 lines
issue3770: if SEM_OPEN is 0, disable the mp.synchronize module, rev. Nick Coghlan, Damien Miller
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r66696 | andrew.kuchling | 2008-09-30 07:31:07 -0500 (Tue, 30 Sep 2008) | 1 line
Edits, and add markup
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r66697 | andrew.kuchling | 2008-09-30 08:00:34 -0500 (Tue, 30 Sep 2008) | 1 line
Markup fix
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r66698 | andrew.kuchling | 2008-09-30 08:00:51 -0500 (Tue, 30 Sep 2008) | 1 line
Markup fixes
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r66699 | andrew.kuchling | 2008-09-30 08:01:46 -0500 (Tue, 30 Sep 2008) | 1 line
Markup fixes. (optparse.rst probably needs an entire revision pass.)
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diff --git a/Lib/multiprocessing/synchronize.py b/Lib/multiprocessing/synchronize.py
index be56a5b..08d7c5d 100644
--- a/Lib/multiprocessing/synchronize.py
+++ b/Lib/multiprocessing/synchronize.py
@@ -21,6 +21,17 @@
from multiprocessing.util import Finalize, register_after_fork, debug
from multiprocessing.forking import assert_spawning, Popen
+# Try to import the mp.synchronize module cleanly, if it fails
+# raise ImportError for platforms lacking a working sem_open implementation.
+# See issue 3770
+try:
+ from _multiprocessing import SemLock
+except (ImportError):
+ raise ImportError("This platform lacks a functioning sem_open" +
+ " implementation, therefore, the required" +
+ " synchronization primitives needed will not" +
+ " function, see issue 3770.")
+
#
# Constants
#