[Python-checkins] cpython (merge 3.4 -> default): Merge 3.4.

richard.oudkerk python-checkins at python.org
Sun Mar 23 12:59:23 CET 2014


http://hg.python.org/cpython/rev/3d0eacb12b5c
changeset:   89924:3d0eacb12b5c
parent:      89922:802ed5baffb3
parent:      89923:619331c67638
user:        Richard Oudkerk <shibturn at gmail.com>
date:        Sun Mar 23 11:57:01 2014 +0000
summary:
  Merge 3.4.

files:
  Lib/multiprocessing/spawn.py       |  12 ++++++++++--
  Lib/multiprocessing/synchronize.py |   7 ++++---
  Misc/NEWS                          |   2 ++
  3 files changed, 16 insertions(+), 5 deletions(-)


diff --git a/Lib/multiprocessing/spawn.py b/Lib/multiprocessing/spawn.py
--- a/Lib/multiprocessing/spawn.py
+++ b/Lib/multiprocessing/spawn.py
@@ -64,7 +64,14 @@
     Run code for process object if this in not the main process
     '''
     if is_forking(sys.argv):
-        main()
+        kwds = {}
+        for arg in sys.argv[2:]:
+            name, value = arg.split('=')
+            if value == 'None':
+                kwds[name] = None
+            else:
+                kwds[name] = int(value)
+        spawn_main(**kwds)
         sys.exit()
 
 
@@ -73,7 +80,8 @@
     Returns prefix of command line used for spawning a child process
     '''
     if getattr(sys, 'frozen', False):
-        return [sys.executable, '--multiprocessing-fork']
+        tmp = ' '.join('%s=%r' % item for item in kwds.items())
+        return [sys.executable, '--multiprocessing-fork'] + tmp
     else:
         prog = 'from multiprocessing.spawn import spawn_main; spawn_main(%s)'
         prog %= ', '.join('%s=%r' % item for item in kwds.items())
diff --git a/Lib/multiprocessing/synchronize.py b/Lib/multiprocessing/synchronize.py
--- a/Lib/multiprocessing/synchronize.py
+++ b/Lib/multiprocessing/synchronize.py
@@ -49,9 +49,10 @@
     _rand = tempfile._RandomNameSequence()
 
     def __init__(self, kind, value, maxvalue, *, ctx):
-        ctx = ctx or get_context()
-        ctx = ctx.get_context()
-        unlink_now = sys.platform == 'win32' or ctx._name == 'fork'
+        if ctx is None:
+            ctx = context._default_context.get_context()
+        name = ctx.get_start_method()
+        unlink_now = sys.platform == 'win32' or name == 'fork'
         for i in range(100):
             try:
                 sl = self._semlock = _multiprocessing.SemLock(
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -23,6 +23,8 @@
 Library
 -------
 
+- Issue #20990: Fix issues found by pyflakes for multiprocessing.
+
 - Issue #21015: SSL contexts will now automatically select an elliptic
   curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise
   default to "prime256v1".

-- 
Repository URL: http://hg.python.org/cpython


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