gevent, sockets and syncronisation

Posted by schlamar on Stack Overflow See other posts from Stack Overflow or by schlamar
Published on 2012-12-07T08:39:05Z Indexed on 2012/12/08 11:07 UTC
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python

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sockets

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gevent

I have multiple greenlets sending on a common socket. Is it guaranteed that each package sent via socket.sendall is well separated or do I have to acquire a lock before each call to sendall.

So I want to prevent the following scenario:

g1 sends ABCD
g2 sends 1234
received data is mixed up, for example AB1234CD
expected is either ABCD1234 or 1234ABCD

Update

After a look at the sourcecode I think this scenario cannot happen. But I have to use a lock because g1 or g2 can crash on the sendall. Can someone confirm this?

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