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diff --git a/Lib/threading.py b/Lib/threading.py
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index cb49c4a..c9795a5 100644
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--- a/Lib/threading.py
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+++ b/Lib/threading.py
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@@ -305,7 +305,7 @@ class _Condition(_Verbose):
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else:
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return True
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- def wait(self, timeout=None):
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+ def wait(self, timeout=None, balancing=True):
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"""Wait until notified or until a timeout occurs.
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If the calling thread has not acquired the lock when this method is
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@@ -354,7 +354,10 @@ class _Condition(_Verbose):
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remaining = endtime - _time()
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if remaining <= 0:
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break
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- delay = min(delay * 2, remaining, .05)
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+ if balancing:
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+ delay = min(delay * 2, remaining, 0.05)
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+ else:
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+ delay = remaining
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_sleep(delay)
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if not gotit:
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if __debug__:
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@@ -599,7 +602,7 @@ class _Event(_Verbose):
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finally:
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self.__cond.release()
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- def wait(self, timeout=None):
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+ def wait(self, timeout=None, balancing=True):
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"""Block until the internal flag is true.
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If the internal flag is true on entry, return immediately. Otherwise,
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@@ -617,7 +620,7 @@ class _Event(_Verbose):
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self.__cond.acquire()
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try:
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if not self.__flag:
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- self.__cond.wait(timeout)
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+ self.__cond.wait(timeout, balancing)
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return self.__flag
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finally:
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self.__cond.release()
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@@ -908,7 +911,7 @@ class Thread(_Verbose):
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if 'dummy_threading' not in _sys.modules:
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raise
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- def join(self, timeout=None):
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+ def join(self, timeout=None, balancing=True):
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"""Wait until the thread terminates.
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This blocks the calling thread until the thread whose join() method is
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@@ -957,7 +960,7 @@ class Thread(_Verbose):
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if __debug__:
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self._note("%s.join(): timed out", self)
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break
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- self.__block.wait(delay)
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+ self.__block.wait(delay, balancing)
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else:
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if __debug__:
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self._note("%s.join(): thread stopped", self)
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@@ -1143,7 +1146,7 @@ class _DummyThread(Thread):
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def _set_daemon(self):
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return True
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- def join(self, timeout=None):
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+ def join(self, timeout=None, balancing=True):
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assert False, "cannot join a dummy thread"
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