[Boost-bugs] [Boost C++ Libraries] #1328: boost::spirit concurrency gap

Subject: [Boost-bugs] [Boost C++ Libraries] #1328: boost::spirit concurrency gap
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-10-19 08:43:19

#1328: boost::spirit concurrency gap
-------------------------------+--------------------------------------------
 Reporter:  vlad_news_at_[hidden]  |       Owner:  djowel 
     Type:  Bugs               |      Status:  new    
Milestone:  To Be Determined   |   Component:  spirit 
  Version:  Boost 1.34.1       |    Severity:  Problem
 Keywords:                     |  
-------------------------------+--------------------------------------------
 The following snipped code from the "boost::spirit" library contains the
 problem with concurrent access to a static object. Creation of a object of
 "thread_specific_ptr" type should be protected while concurrent access is
 performed.

 //boost\spirit\core\non_terminal\impl\grammar.ipp

 ...

 # ifdef BOOST_SPIRIT_THREADSAFE
         //should be protected with a "call once" idiom

         static boost::thread_specific_ptr<ptr_t> tld_helper;

         if (!tld_helper.get())

             tld_helper.reset(new ptr_t);

         ptr_t &helper = *tld_helper;

 # else

         static ptr_t helper;

 # endif

 ...

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1328>
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