[zeromq-dev] Memory leak in recv() in Java client

gonzalo diethelm gdiethelm at dcv.cl
Tue May 11 20:00:28 CEST 2010

> > Taking a look at JNIEXPORT jbyteArray JNICALL
> > Java_org_zeromq_ZMQ_00024Socket_recv (JNIEnv *env, jobject obj,
> > flags) in Socket.cpp, I noticed that the zmq_msg_t message was never
> > cleaned up, so I added a zmq_close_message(&message) right before
> > returning, and now there is no growth in the consumer memory size.
> > is the change, with a bit of context:
> >
> > 346    env->SetByteArrayRegion (data, 0, sz, (jbyte*) pd);
> > 347
> > 348    zmq_msg_close(&message);
> > 349
> > 350    return data;
> >
> > Since I've only just (in the last week) started playing with 0MQ,
> > not 100% confident that this is the right "fix", so would appreciate
> > some feedback from someone with a bit more knowledge.
> Yes. You are right. The message is never deallocated. I've committed
> fix.
> Thanks!

Great catch Jon, thank you very much.

Gonzalo Diethelm

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