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Issue #21565: multiprocessing: use contex-manager protocol for synchronization

Browse source 
primitives.
This commit is contained in:
Charles-François Natali 2014-05-25 14:12:12 +01:00
parent 1691e35953
commit a924fc7abc
9 changed files with 43 additions and 102 deletions
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20
Lib/multiprocessing/synchronize.py
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@ -337,34 +337,24 @@ class Event(object):
self._flag = ctx.Semaphore(0)
def is_set(self):
self._cond.acquire()
try:
with self._cond:
if self._flag.acquire(False):
self._flag.release()
return True
return False
finally:
self._cond.release()
def set(self):
self._cond.acquire()
try:
with self._cond:
self._flag.acquire(False)
self._flag.release()
self._cond.notify_all()
finally:
self._cond.release()
def clear(self):
self._cond.acquire()
try:
with self._cond:
self._flag.acquire(False)
finally:
self._cond.release()
def wait(self, timeout=None):
self._cond.acquire()
try:
with self._cond:
if self._flag.acquire(False):
self._flag.release()
else:
@ -374,8 +364,6 @@ class Event(object):
self._flag.release()
return True
return False
finally:
self._cond.release()
#
# Barrier