Re: Threads across programming languages

On 4/30/2024 9:54 PM, Bonita Montero wrote:

Am 29.04.2024 um 22:33 schrieb Chris M. Thomasson:

On 4/29/2024 1:29 PM, Lawrence D'Oliveiro wrote:

On Mon, 29 Apr 2024 19:13:09 +0300, Paavo Helde wrote:
>

Just for waiting on thousands on sockets I believe a single select()
call would be sufficient ...

>
We use poll(2) or epoll(2) nowadays. select(2) is antiquated.

>
AIO on Linux, IOCP on windows.

 Boost.ASIO does that all for you with a convenient interface.
If enabled it even uses io_uring or the Windows' pendant.
 

I never used ASIO. Back when I wrote server code for WinNT 4.0 I used IOCP directly. Then I learned about AIO, and ported most of it. It was a fairly interesting port. I love the GetQueuedCompletionStatusEx function:
https://learn.microsoft.com/en-us/windows/win32/fileio/getqueuedcompletionstatusex-func
Have you ever read about cohort scheduling? GetQueuedCompletionStatusEx works rather well for that because it returns multiple events. A quick little sort and we have a cohort:
https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/tr-2001-39.pdf
I still remember when I first read that paper. :^D