openstack/deb-python-eventlet
Code Issues Proposed changes

Use a call_after in the signal to possibly avoid a race condition. Patch by Kieran Holland, thanks\!

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This commit is contained in:
donovan
2008-07-21 17:34:41 -07:00
parent 283270075a
commit 50b841834a
1 changed files with 6 additions and 1 deletions
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7
eventlet/processes.py
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@@ -42,7 +42,7 @@ CHILD_PIDS = []
CHILD_EVENTS = {} CHILD_EVENTS = {}
def sig_child(signal, frame): def wait_on_children():
for child_pid in CHILD_PIDS: for child_pid in CHILD_PIDS:
try: try:
pid, code = util.__original_waitpid__(child_pid, os.WNOHANG) pid, code = util.__original_waitpid__(child_pid, os.WNOHANG)
@@ -65,6 +65,11 @@ def sig_child(signal, frame):
# Already dead; signal, but assume success # Already dead; signal, but assume success
event = CHILD_EVENTS.pop(child_pid) event = CHILD_EVENTS.pop(child_pid)
event.send(0) event.send(0)
def sig_child(signal, frame):
from eventlet import api
api.call_after(0, wait_on_children)
signal.signal(signal.SIGCHLD, sig_child) signal.signal(signal.SIGCHLD, sig_child)