[Boost-bugs] [Boost C++ Libraries] #7682: boost 1.52 named_mutex/named_condition pairing broken

Subject: [Boost-bugs] [Boost C++ Libraries] #7682: boost 1.52 named_mutex/named_condition pairing broken
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-11-13 00:00:48

#7682: boost 1.52 named_mutex/named_condition pairing broken
----------------------------------------+-----------------------------------
 Reporter:  damian.coventry@…           |       Owner:  igaztanaga  
     Type:  Bugs                        |      Status:  new         
Milestone:  To Be Determined            |   Component:  interprocess
  Version:  Boost 1.52.0                |    Severity:  Showstopper 
 Keywords:                              |  
----------------------------------------+-----------------------------------
 The following program works in boost 1.47, however in 1.52 it does not.
 To test it, run 2 instances.  The 2nd instance should output the numbers
 1, 3, 5, 7, 9.

 Under 1.52, the program outputs the number 1, and then does nothing. The
 fault appears to be with the named_condition and named_mutex classes.

 Tested under Windows 7 Pro, SP1, using Visual Studio 2010 v10.0.40219.1
 SP1Rel.  The test was done with a statically linked boost date time, with
 Platform Toolset set to v90, i.e. linked with the library
 'libboost_date_time-vc90-mt-sgd-1_47.lib'.

 {{{
 #include <boost/interprocess/managed_shared_memory.hpp>
 #include <boost/interprocess/sync/named_mutex.hpp>
 #include <boost/interprocess/sync/named_condition.hpp>
 #include <boost/interprocess/sync/scoped_lock.hpp>
 #include <iostream>

 int main()
 {
   boost::interprocess::managed_shared_memory
 managed_shm(boost::interprocess::open_or_create, "shm", 1024);
   int *i = managed_shm.find_or_construct<int>("Integer")(0);
   boost::interprocess::named_mutex
 named_mtx(boost::interprocess::open_or_create, "mtx");
   boost::interprocess::named_condition
 named_cnd(boost::interprocess::open_or_create, "cnd");
   boost::interprocess::scoped_lock<boost::interprocess::named_mutex>
 lock(named_mtx);
   while (*i < 10)
   {
     if (*i % 2 == 0)
     {
       ++(*i);
       named_cnd.notify_all();
       named_cnd.wait(lock);
     }
     else
     {
       std::cout << *i << std::endl;
       ++(*i);
       named_cnd.notify_all();
       named_cnd.wait(lock);
     }
   }
   named_cnd.notify_all();
   boost::interprocess::shared_memory_object::remove("shm");
   boost::interprocess::named_mutex::remove("mtx");
   boost::interprocess::named_condition::remove("cnd");
 }

 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7682>
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