[Boost-bugs] [Boost C++ Libraries] #6108: Boost interprocess lock consumes 100% CPU on OS X

Subject: [Boost-bugs] [Boost C++ Libraries] #6108: Boost interprocess lock consumes 100% CPU on OS X
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-11-09 10:08:03

#6108: Boost interprocess lock consumes 100% CPU on OS X
-------------------------------------------+--------------------------------
 Reporter:  tibdewal.rahulkumar@…          |       Owner:  igaztanaga  
     Type:  Bugs                           |      Status:  new         
Milestone:  To Be Determined               |   Component:  interprocess
  Version:  Boost 1.47.0                   |    Severity:  Showstopper 
 Keywords:                                 |  
-------------------------------------------+--------------------------------
 I have some code which waits for write operation on Shared Memory. If no
 one writes it continues to wait.

 {{{
     Test* Foo::Get()
     {
 boost::interprocess::scoped_lock<boost::interprocess::interprocess_mutex>
 lock ( mutex ) ; // mutex is boost::interprocess::interprocess_mutex
         if ( this->check == 0 )
             this->interprocessCondition.wait ( lock ) ; //
 interprocessCondition is boost::interprocess::interprocess_condition

 ...
     }
 }}}

 CPU consumption is 100%.

 Debugging leads to inline void sched_yield(), for windows it calls
 Sleep(1) but I cannot find any definition for Mac.

 I believe we need sched_yield() implementation and may be usleep(1000)
 within it.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6108>
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