Re: [Boost-bugs] [Boost C++ Libraries] #7906: Very bad performance of generic implementation of shared_mutex on windows

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7906: Very bad performance of generic implementation of shared_mutex on windows
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-02-09 14:00:10

#7906: Very bad performance of generic implementation of shared_mutex on windows
-------------------------------------------+--------------------------------
  Reporter:  Andrey <nikolay@…>            |       Owner:  viboes             
      Type:  Bugs                          |      Status:  assigned           
 Milestone:  To Be Determined              |   Component:  thread             
   Version:  Boost 1.52.0                  |    Severity:  Optimization       
Resolution:                                |    Keywords:  thread shared_mutex
-------------------------------------------+--------------------------------

Comment (by viboes):

 Replying to [comment:7 Andrey <nikolay@…>]:
 > I am going to test you patch on next week. Sorry for the delay.

 After thinking a little bit more on this subject, I'm not sure
 shared_mutex should be an interruption point or not. With the pthread
 implementation most of the operations are interruption points as they use
 condition_variables, but the win32 implementation don't use
 condition_variables. What do you think?

 In any case the patch is incomplete as it only disable interrupts, but
 doesn't adds calls to this_thread::interruption_point().

 The test I also did is to compile without interruptions. Please could you
 give the performances when you enable/disable interruptions
 (BOOST_THREAD_PROVIDES_INTERRUPTIONS/BOOST_THREAD_DONT_PROVIDE_INTERRUPTIONS)?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7906#comment:8>
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