Re: OPENSSL_thread_stop() equivalent

[Matt Caswell]

On 07/08/2019 01:36, Salz, Rich via openssl-users wrote:
>>Due to this I have to remove the usage of OPENSSL_thread_stop(), want to know
> the equivalent call in OpenSSL 1.0.2s? if applicable. 
> 
> 1.0.2 has no concept/support for threads, so you probably don’t need to do 
> anything.

That's not entirely true. 1.0.2 does support threads, but does so through
various callback mechanisms. It also has a pseudo thread local storage concept
in the error mechanism.

In 1.0.2, instead of OPENSSL_thread_stop(), you should call:

ERR_remove_thread_state()

However the conditions are slightly different in 1.0.2.

1.1.x will usually detect thread exit automatically and you don't need to call
OPENSSL_thread_stop() at all. For all the details see the OPENSSL_thread_stop()
man page:

https://www.openssl.org/docs/man1.1.1/man3/OPENSSL_thread_stop.html

None of the capability to automatically detect thread exit exists in 1.0.2.

Matt

Re: OPENSSL_thread_stop() equivalent

[Salz, Rich via openssl-users]

  *   Had to downgrade the OpenSSL used in an application from 1.1.0k to 1.0.2s.

That’s too bad, given 1.0.2 is going to become unsupported at year-end.  Was it 
because the application wasn’t ready to handle opaque structures?

>Due to this I have to remove the usage of OPENSSL_thread_stop(), want to know 
>the equivalent call in OpenSSL 1.0.2s? if applicable.

1.0.2 has no concept/support for threads, so you probably don’t need to do 
anything.

OPENSSL_thread_stop() equivalent

[Dipak B]

Hi,

Had to downgrade the OpenSSL used in an application from 1.1.0k to 1.0.2s.

Due to this I have to remove the usage of OPENSSL_thread_stop(), want to
know the equivalent call in OpenSSL 1.0.2s? if applicable.

Did try the documents, change history and source code for help but could
not figure out much in short time spent.

My assumption is that above call deallocates memory and other structures
used by OpenSSL. Seems to be generic call to be used at end of threads.

Could anyone please explain me this call and it's replacement? Or point me
in the right direction?

Thank you.