id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
1862,file_lock.hpp will not compile - at least under MSVC8,Ranger Harke <rharke.bugs@…>,Ion Gaztañaga,"Hi,

I'm attempting to use interprocess::file_lock in 1.35.0. Unfortunately, it will not compile at all in my environment, which is Microsoft Visual Studio 2005 on WinXP. Merely #include'ing boost/interprocess/sync/file_lock.hpp causes this failure mode.

A summary of the errors:

{{{
<...> boost/interprocess/sync/file_lock.hpp(167) : error C2535: 'bool boost::interprocess::file_lock::timed_acquire_file_lock(boost::interprocess::file_handle_t,bool &,const boost::posix_time::ptime &)' : member function already defined or declared
        e:\dev\cub\boost\boost/interprocess/sync/file_lock.hpp(110) : see declaration of 'boost::interprocess::file_lock::timed_acquire_file_lock'
<...> boost/interprocess/sync/file_lock.hpp(195) : error C2535: 'bool boost::interprocess::file_lock::timed_acquire_file_lock_sharable(boost::interprocess::file_handle_t,bool &,const boost::posix_time::ptime &)' : member function already defined or declared
        e:\dev\cub\boost\boost/interprocess/sync/file_lock.hpp(138) : see declaration of 'boost::interprocess::file_lock::timed_acquire_file_lock_sharable'
<...> boost/interprocess/sync/file_lock.hpp(119) : error C3861: 'try_acquire_file_lock': identifier not found
<...> boost/interprocess/sync/file_lock.hpp(147) : error C3861: 'try_acquire_file_lock_sharable': identifier not found
<...> boost/interprocess/sync/file_lock.hpp(175) : error C3861: 'try_acquire_file_lock': identifier not found
<...> boost/interprocess/sync/file_lock.hpp(188) : error C3861: 'sleep': identifier not found
<...> boost/interprocess/sync/file_lock.hpp(203) : error C3861: 'try_acquire_file_lock_sharable': identifier not found
<...> boost/interprocess/sync/file_lock.hpp(262) : error C2039: 'timed_acquire_file_lock' : is not a member of 'boost::interprocess::detail'
<...> boost/interprocess/sync/file_lock.hpp(298) : error C2039: 'timed_acquire_file_lock_sharable' : is not a member of 'boost::interprocess::detail'
}}}

Investigation of file_lock.hpp reveals that:
 * Indeed, both timed_acquire_file_lock and timed_acquire_file_lock_sharable are defined twice ''in their entirety''
 * Various functions calls are to functions in incorrect namespaces;
   * try_acquire_file_lock, for example, is I believe in boost::interprocess::detail, which is not in scope (only boost::detail is).
   * I'm not sure what scope sleep is supposed to be in.. there are a few implementations peppered throughout Boost

I'm not sure if other compilers perhaps have different scoping semantics and/or different ways of handling function redefinitions, but this definitely doesn't seem to fly on MSVC8.

A simple reproduction case:

{{{
#include <boost/interprocess/sync/file_lock.hpp>

int main(int argc, char** argv) {
  printf(""hello world"");
  return 0;
}
}}}

Really only the inclusion of the header file is necessary, as stated earlier.

Thanks!",Bugs,closed,,interprocess,Boost 1.35.0,Problem,fixed,file_lock,