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authorAntoine Pitrou <pitrou@free.fr>2017-09-07 16:56:24 (GMT)
committerVictor Stinner <victor.stinner@gmail.com>2017-09-07 16:56:24 (GMT)
commita6a4dc816d68df04a7d592e0b6af8c7ecc4d4344 (patch)
tree1c31738009bee903417cea928e705a112aea2392 /Lib/_pydecimal.py
parent1f06a680de465be0c24a78ea3b610053955daa99 (diff)
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bpo-31370: Remove support for threads-less builds (#3385)
* Remove Setup.config * Always define WITH_THREAD for compatibility.
Diffstat (limited to 'Lib/_pydecimal.py')
-rw-r--r--Lib/_pydecimal.py87
1 files changed, 23 insertions, 64 deletions
diff --git a/Lib/_pydecimal.py b/Lib/_pydecimal.py
index edabf72..a43c75f 100644
--- a/Lib/_pydecimal.py
+++ b/Lib/_pydecimal.py
@@ -436,75 +436,34 @@ _rounding_modes = (ROUND_DOWN, ROUND_HALF_UP, ROUND_HALF_EVEN, ROUND_CEILING,
# work for older Pythons. If threads are not part of the build, create a
# mock threading object with threading.local() returning the module namespace.
-try:
- import threading
-except ImportError:
- # Python was compiled without threads; create a mock object instead
- class MockThreading(object):
- def local(self, sys=sys):
- return sys.modules[__xname__]
- threading = MockThreading()
- del MockThreading
-
-try:
- threading.local
-
-except AttributeError:
-
- # To fix reloading, force it to create a new context
- # Old contexts have different exceptions in their dicts, making problems.
- if hasattr(threading.current_thread(), '__decimal_context__'):
- del threading.current_thread().__decimal_context__
-
- def setcontext(context):
- """Set this thread's context to context."""
- if context in (DefaultContext, BasicContext, ExtendedContext):
- context = context.copy()
- context.clear_flags()
- threading.current_thread().__decimal_context__ = context
-
- def getcontext():
- """Returns this thread's context.
-
- If this thread does not yet have a context, returns
- a new context and sets this thread's context.
- New contexts are copies of DefaultContext.
- """
- try:
- return threading.current_thread().__decimal_context__
- except AttributeError:
- context = Context()
- threading.current_thread().__decimal_context__ = context
- return context
+import threading
-else:
+local = threading.local()
+if hasattr(local, '__decimal_context__'):
+ del local.__decimal_context__
- local = threading.local()
- if hasattr(local, '__decimal_context__'):
- del local.__decimal_context__
+def getcontext(_local=local):
+ """Returns this thread's context.
- def getcontext(_local=local):
- """Returns this thread's context.
-
- If this thread does not yet have a context, returns
- a new context and sets this thread's context.
- New contexts are copies of DefaultContext.
- """
- try:
- return _local.__decimal_context__
- except AttributeError:
- context = Context()
- _local.__decimal_context__ = context
- return context
-
- def setcontext(context, _local=local):
- """Set this thread's context to context."""
- if context in (DefaultContext, BasicContext, ExtendedContext):
- context = context.copy()
- context.clear_flags()
+ If this thread does not yet have a context, returns
+ a new context and sets this thread's context.
+ New contexts are copies of DefaultContext.
+ """
+ try:
+ return _local.__decimal_context__
+ except AttributeError:
+ context = Context()
_local.__decimal_context__ = context
+ return context
+
+def setcontext(context, _local=local):
+ """Set this thread's context to context."""
+ if context in (DefaultContext, BasicContext, ExtendedContext):
+ context = context.copy()
+ context.clear_flags()
+ _local.__decimal_context__ = context
- del threading, local # Don't contaminate the namespace
+del threading, local # Don't contaminate the namespace
def localcontext(ctx=None):
"""Return a context manager for a copy of the supplied context