Re: [Boost-bugs] [Boost C++ Libraries] #5230: Interprocess shared memory between 32 and 64 bit processes

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5230: Interprocess shared memory between 32 and 64 bit processes
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-03-28 03:27:18

#5230: Interprocess shared memory between 32 and 64 bit processes
--------------------------------------+-------------------------------------
  Reporter:  tgermer@…                |       Owner:  igaztanaga             
      Type:  Feature Requests         |      Status:  new                    
 Milestone:  To Be Determined         |   Component:  interprocess           
   Version:  Boost Development Trunk  |    Severity:  Problem                
Resolution:                           |    Keywords:  shared memory 32 64 bit
--------------------------------------+-------------------------------------

Comment (by xijing dai <dxj19831029@…>):

 Replying to [comment:9 xijing dai <dxj19831029@…>]:
 > Replying to [comment:8 tgermer@…]:
 > > Replying to [comment:7 xijing dai <dxj19831029@…>]:
 > > > I am currently on version 1.46.1
 > > > I would like to get this patch and have a go, is that possible?
 > > > where can i get the patch?
 > > > do i need to upgrade all my boost libs to trunk head in order to use
 it?
 > >
 > > I'm also on 1.46.1. You just have to update boost/interprocess,
 boost/intrusive and boost/move (which is new) to the trunk version in
 order to use it. No need to update anything else yet. Currently there is
 one open issue to make it work: the namespace conflict. If you want to
 resolve it manually, you need to remove the comment from "union
 internal_type" in boost/interprocess/offset_ptr.hpp. Then you have to
 replace every "detail::" with "::boost::detail::" in aligned_storage.hpp
 (the patch that I suggested in comment 4 and also on the mailing list).
 >
 > First all, thanks to this patch, whoever did it, I really appreciate
 their work, it helps me a lot.
 >
 > I tested in my application, it works great. testing includes:
 > * windows_shared_memory
 > * message queue
 > * managed_windows_shared_memory
 > ** create named item
 > ** raw allocate
 >
 > By the way, I didn't change anything relating to the namespace issue, it
 passed compiling and worked great.

 Interesting, I am not sure if I had wrong testing last week, or I did
 something wrong this week.

 This week, the program doesn't work properly between 32/64
 managed_windows_shared_memory

 I do a little trace, when i allocate 1000000 bytes, it said free memory
 is: 999912, in 32bit.
 in 64 bit, it is: 999848.

 For me, it looks like something wrong in: rbtree_best_fit, since when i
 trace from get_free_memory method, it gives different values, so I assume
 there is some setting wrong for that class.

 by the way, I do uncomment union internal_type section, and I didn't
 change "detail::" stuff inside aligned_storage.hpp, is that a problem?

 Do you have any idea what's going on here?

 Cheers

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5230#comment:10>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.