openstack/deb-python-eventlet
Code Issues Proposed changes

Disable the thread state lock

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This commit is contained in:
Victor Stinner
2015-03-06 22:16:20 +01:00
committed by Sergey Shepelev
parent b5bfe1cad9
commit 390e71d898
1 changed files with 14 additions and 0 deletions
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14
eventlet/green/thread.py
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@@ -3,6 +3,7 @@ from eventlet.support.six.moves import _thread as __thread
from eventlet.support import greenlets as greenlet, six
from eventlet import greenthread
from eventlet.semaphore import Semaphore as LockType
import sys
__patched__ = ['get_ident', 'start_new_thread', 'start_new', 'allocate_lock',
@@ -43,6 +44,19 @@ def __thread_body(func, args, kwargs):
def start_new_thread(function, args=(), kwargs=None):
if (sys.version_info >= (3, 4)
and getattr(function, '__module__', '') == 'threading'
and hasattr(function, '__self__')):
# Since Python 3.4, threading.Thread uses an internal lock
# automatically released when the python thread state is deleted.
# With monkey patching, eventlet uses green threads without python
# thread state, so the lock is not automatically released.
#
# Disable the thread state lock to avoid dead locks.
thread = function.__self__
thread._set_tstate_lock = lambda: None
thread._wait_for_tstate_lock = lambda *args, **kw: None
kwargs = kwargs or {}
g = greenthread.spawn_n(__thread_body, function, args, kwargs)
return get_ident(g)