Re: [Boost-bugs] [Boost C++ Libraries] #9720: boost::this_thread::sleep_for() sometimes returns immediately on win32

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9720: boost::this_thread::sleep_for() sometimes returns immediately on win32
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-03-10 18:47:37

#9720: boost::this_thread::sleep_for() sometimes returns immediately on win32
-------------------------+-------------------------------------------------
  Reporter:  Lars        |      Owner:  viboes
  Hagström <lars@…>      |     Status:  assigned
      Type:  Bugs        |  Component:  thread
 Milestone:  To Be       |   Severity:  Problem
  Determined             |   Keywords:  chrono thread
   Version:  Boost       |  QueryPerformanceCounter
  1.55.0                 |
Resolution:              |
-------------------------+-------------------------------------------------

Comment (by viboes):

 Replying to [comment:4 Lars Hagström <lars@…>]:
 > I just realized what the problem is!
 >
 > It's not a QPC problem after all. It's the static in steady_clock::now.
 I've got 50 threads trying to initialize that static variable at the same
 time, of course things go wrong :-)
 >
 > No idea of how to fix it in an efficient manner, though.

 Do you mean the static in


 {{{
     static double nanosecs_per_tic =
 chrono_detail::get_nanosecs_per_tic();
 }}}

 Could you try removing the static keyword?


 {{{
   steady_clock::time_point steady_clock::now() BOOST_NOEXCEPT
   {
     double nanosecs_per_tic = chrono_detail::get_nanosecs_per_tic();
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9720#comment:5>
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