[zeromq-dev] Java binding proposed changes

gonzalo diethelm gdiethelm at dcv.cl
Thu Apr 1 14:44:26 CEST 2010

> > The rule of the thumb is: When the problem shouldn't happen - i.e.
> > there's a bug in 0MQ of Java binding - assert. If the problem can be
> > caused by the user raise an exception.
> Ok, if that is the rule there are several assert() calls that will
> the same; perhaps all of them. I will report back.

Find attached a patch that does the following:

* Move the raise_exception() function to a separate util.{hpp,cpp} file;
it is used from Socket.cpp and Poller.cpp.
* Use assert() only when signaling an error that the user cannot do
anything about; in all other cases, raise an exception.
* Check the error code returned by all calls to 0MQ functions (there
were a few missing). When checking this, always do (rc != 0) instead of
(rc == -1).
* After a call to a 0MQ function, assign errno to err; this is to ensure
errno is not overwritten after the 0MQ call but before raising an
exception that reports that error.
* Make sure multiple initialization / finalizations of Context and
Socket have no effect, to allow explicit calls to term() / close().

I know I have write access to the Java binding repo, but I prefer to
show my changes before committing them. Any comments before I do?

Gonzalo Diethelm

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