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Groups > comp.programming.threads > #1806
| From | Anthony Williams <anthony.ajw@gmail.com> |
|---|---|
| Newsgroups | comp.programming.threads |
| Subject | Re: forcing the compiler to reload from memory with c++0x |
| References | (2 earlier) <4d3e2e3f$0$21517$426a34cc@news.free.fr> <4D40A4C7.16E6F9AE@web.de> <69d82db7-34be-4de7-86c4-2f39cc1e6df3@m13g2000yqb.googlegroups.com> <4D415CB9.8E64A6AE@web.de> <0f5da3b3-9991-4f19-bc5e-8462b1a9feef@a28g2000vbo.googlegroups.com> |
| Date | 2011-01-28 08:12 +0000 |
| Message-ID | <87ei7xxx9f.fsf@justsoftwaresolutions.co.uk> (permalink) |
| Organization | CNNTP |
frege <gottlobfrege@gmail.com> writes: > On Jan 27, 6:53 am, Alexander Terekhov <terek...@web.de> wrote: >> frege wrote: >> >> [...] >> >> > Anyhow, I would say that this is one of those rare cases where >> > volatile is the right answer - you just need to adds lots of code >> >> Volatile is not the right answer. atomic<> is the rights answer. >> > > Yes, we still need atomic - in the most basic sense - ie an aligned > int, for example. But no memory_order_* instructions are needed. Well, if you use an atomic<int> then you will need to use memory_order_relaxed explicitly unless you want the default memory_order_seq_cst. If you don't use atomic<int> then you have undefined behaviour. Anthony -- Author of C++ Concurrency in Action http://www.stdthread.co.uk/book/ just::thread C++0x thread library http://www.stdthread.co.uk Just Software Solutions Ltd http://www.justsoftwaresolutions.co.uk 15 Carrallack Mews, St Just, Cornwall, TR19 7UL, UK. Company No. 5478976
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Re: forcing the compiler to reload from memory with c++0x Anthony Williams <anthony.ajw@gmail.com> - 2011-01-28 08:12 +0000
Re: forcing the compiler to reload from memory with c++0x frege <gottlobfrege@gmail.com> - 2011-01-28 19:47 -0800
Re: forcing the compiler to reload from memory with c++0x Dmitriy Vyukov <dvyukov@gmail.com> - 2011-01-29 01:43 -0800
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