Boost C++ Libraries: Ticket #10833: boost::async should support auto scheduling (launch deferred)?

viboes — Tue, 02 Dec 2014 17:49:50 GMT

What would be for you the criteria to switch to defer?

owner changed

viboes — Tue, 02 Dec 2014 17:50:05 GMT

owner changed from Anthony Williams to viboes

adishavit@… — Tue, 02 Dec 2014 21:24:44 GMT

This should be based on system load as determined by the OS. At least this is how Herb Sutter presented it in one of his talks, and how Scott Meyers claims it should work.

viboes — Wed, 03 Dec 2014 05:51:39 GMT

I would need something more precise. DO you have some pointers?

adishavit@… — Wed, 03 Dec 2014 19:57:48 GMT

Effective Modern C++, item 35: "Your life will be easier if you dump these problems on somebody else, and using std::async does exactly that:

auto fut = std::async(doAsyncWork); onus of thread mgmt is on implementer of the Standard Library

This call shifts the thread management responsibility to the implementer of the C++ Standard Library...When it comes to load balancing, however, the runtime scheduler is likely to have a more comprehensive picture of what’s happening on the machine than you do, because it manages the threads from all processes, not just the one your code is running in.

viboes — Wed, 03 Dec 2014 20:35:28 GMT

Unfortunately this is not the case of Boost.Thread.

adishavit@… — Wed, 03 Dec 2014 22:44:19 GMT

OK.

type changed

viboes — Fri, 05 Dec 2014 20:31:16 GMT

type Bugs → Feature Requests

status changed; resolution set

viboes — Mon, 26 Jan 2015 07:37:23 GMT

status new → closed
resolution → wontfix