Re: Reduce the instruction overhead of OpenSSL calls

> On 27 Feb 2025, at 14:16, ryanewang(王蕾) <ryanewang(at)tencent(dot)com> wrote:
>
> Hi，
> From the openssl documentation, when the value of ret is greater than 0, the SSL_get_error() function returns SSL_ERROR_NONE.
> So, it seems that when the return value of SSL_read() or SSL_write() function is greater than 0, we don't need to make an error judgment.
> The attached patch attempts to reduce unnecessary error judgments.

Calling SSL_get_error() is needed to clear the error queue for subsequent IO
operations, so I don't skipping it would be wise. I imagine that any overhead
is dwarfed by the time spent in network IO anyways.

--
Daniel Gustafsson