Actually C# await on at least the file async IO operations will complete the await on the I/O completion port callback. It's absolutely sad that there is no C++ support for that as of yet, and the standards committee is nowhere near it. It got kicked out of C++ 17... again. MAYBE we'll have language support in 2020, and then it's still going to be 1 or 2 cycles after that before there will be standard library support for common async IO operations.
PS: The work that Microsoft did in Midori & M# on concurrency was also very promising. This is worth a read: http://joeduffyblog.com/2016/11/30/15-years-of-concurrency/ - Deon -----Original Message----- From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On Behalf Of James K. Lowden Sent: Friday, February 17, 2017 9:17 AM To: sqlite-users@mailinglists.sqlite.org Subject: Re: [sqlite] Thread safety of serialized mode On Fri, 17 Feb 2017 04:10:09 +0000 Deon Brewis <de...@outlook.com> wrote: > If you look at the original underlying NT I/O architecture that Cutler > implemented - it is a thing of beauty that's based in async patterns, > and not threads. ... > If instead NT initially only exposed the Nt API's and not the Win32 > layers, we would have had languages that simplified async a long time > ago - and multi-threaded would be the domain of a few applications > that actually need compute, and not just non-blocking IO. That's very interesting, Deon, thanks. I'm happy to cross out Cutler's name from my list of those who Ruined Computing During My Lifetime. I'm not as optimistic as you about what would have happened languagewise. Language support for OS features is pretty rare. Threads happened, and no language corralled them. Windows has completion ports, which are very useful for asynchronous control, but afaik no Microsoft language supports them. It's why I like Go: it's the first language in 30 years to incorporate concurrency in its design, and finally support a theoretically sound model. --jkl _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
