Re: Calling OpenSSL_thread_stop() multiple times

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On 23/08/2023 10:54, Dipak B wrote:

Need input on following questions.

In the application with pseudo code as above, not using Openssl_stop_thread() inside function TalkToWeb() leads to memory leak which gets accumulated until function Shutdown() is called.
>
> How can I avoid memory leak  (stack shared above) ?
>

So, IIUC, TalkToWeb is a function called by a single thread and each thread calls it once and then the thread exits. Is that correct?

In which case calling OPENSSL_thread_stop() at the end of TalkToWeb() would be a good solution.


Can I deduct the following conclusion?

There is constraint on an application (exe) using a DLL which is statically linked to ossl. This constraint is due to openssl.

Constraint:
If thread originating in such a application calls function TalkToWeb() above then it has to call openssl_stop_thread() inside TalkToWeb().

This does not allow one to re-use same thread for calling TalkToWeb().

Right. You cannot re-use the same thread after calling OPENSSL_thread_stop(). If you wan to re-use the thread then you must rearrange things such that OPENSSL_thread_stop() is only called after the *last* time that it is reused.

Matt



Please let me know if any specific part is unclear I will try to describe it.

Thanks and Regards




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