Hi Daniel,

On Tue, 24 May 2022, Daniel Stenberg wrote:

On Mon, 23 May 2022, Junio C Hamano wrote:

quoted

quoted

It calls into cURL, which I suspect has a multi-threaded mode of
operation,

https://curl.se/libcurl/c/threadsafe.html ;-)

My understanding is that what we have is pretty much select() driven
single-threaded multi-fd transfer.

Confirmed. libcurl *can* use threads (if built that way), but the only use it
has for such subthreads is for resolving host names. libcurl, its API and its
callbacks etc always operate in the same single thread.

Great, thanks for clarifying!

Ciao,
Dscho

P.S.: I'm enjoying your book, Uncurled. It feels great to see validation
in some experiences (I'm a youngster compared to you, maintaining Open
Source software only since 2001 or so, but still), and to get a fresh and
inspiring perspective on others.