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yield the CPU to other greenlets

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We need to yield the CPU to other greenlets. Otherwise, ryu can't
accept new switches or handle the existing switches. The limit is
arbitrary. I guess that we need to think about the better approach in
the future (e.g. non greenlet framework).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
FUJITA Tomonori 2012-02-25 11:47:15 +09:00
parent f6741e9c93
commit d7ee5d2282
1 changed files with 10 additions and 0 deletions
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10
ryu/controller/controller.py
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@ -114,6 +114,7 @@ class Datapath(object):
buf = bytearray()
required_len = ofproto.OFP_HEADER_SIZE
count = 0
while self.is_active:
ret = self.socket.recv(required_len)
if len(ret) == 0:
@ -134,6 +135,15 @@ class Datapath(object):
buf = buf[required_len:]
required_len = ofproto.OFP_HEADER_SIZE
# We need to schedule other greenlets. Otherwise, ryu
# can't accept new switches or handle the existing
# switches. The limit is arbitrary. We need the better
# approach in the future.
count += 1
if count > 2048:
count = 0
gevent.sleep(0)
@_deactivate
def _send_loop(self):
while self.is_active: