Op 14 mei 2012 09:03 schreef "xunxun" <[email protected]> het volgende:
>
> δΊ 2012/5/14 7:40, K. Frank ει:
> > Hello All!
> >
> > I am finding that std::this_thread::sleep_for is not fully/properly
implemented.
> >
> > I am using Ruben's 64-bit mingw-w64 4.7.0<thread>-enabled build.
> >
> > When I try compiling:
> >
> > g++ -std=c++0x -static -o test_sleep test_sleep.cpp
> >
> > the line:
> >
> > std::this_thread::sleep_for (std::chrono::milliseconds(500));
> >
> > I get the error:
> >
> > error: 'sleep_for' is not a member of 'std::this_thread'
> >
> > When I try compiling with the following magic incantation:
> >
> > g++ -D_GLIBCXX_USE_NANOSLEEP -std=c++0x -static -o test_sleep
test_sleep.cpp
> >
> > I get the error:
> >
> > In file included from test_sleep.cpp:
> >
c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.7.0/../../../../include/c++/4.7.0/thread:
> > In function 'void std::this_thread::sleep_for(const
> > std::chrono::duration<_Rep, _Period>&)':
> >
c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.7.0/../../../../include/c++/4.7.0/thread:277:2:
> > error: '::nanosleep' has not been declared
> >
> > Some background:
> >
> > Going back over my notes I see that when I was building my<thread>
> > implementation I came across this same issue, but I never came back
> > to sort it out or implement it properly. (At the time I was focused on
> > using sleep_for as part of a test for some of the other<thread> stuff
> > I had implemented, rather than on implementing sleep_for itself. So
> > I just moved forward by using the native windows sleep for my testing
> > and overlooked coming back to get sleep_for working.)
> >
> > This looks like a semi-know issue in the gcc / linux world. Here are
> > a couple of semi-random references:
> >
> >
http://markmail.org/message/ufyrfwq6qjphewbm#query:+page:1+mid:4mui756gcycjvjnx+state:results
> > https://bugs.archlinux.org/task/27751
> >
> > (Hence my attempt to us -D_GLIBCXX_USE_NANOSLEEP.)
> >
> >
> > Best.
> >
> >
> > K. Frank
> I think it need to rebuild gcc using --enable-libstdcxx-time=yes
>
I'll add that in my next build. The question becomes then why is this not
detected by configure automatically?
Ruben
> --
> Best Regards,
> xunxun
>
>
>
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