Re: [Boost-bugs] [Boost C++ Libraries] #7235: mapped_region not accepting size = 0

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7235: mapped_region not accepting size = 0
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-08-15 21:18:01

#7235: mapped_region not accepting size = 0
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  Reporter:  matthieu.dorier@…         |       Owner:  igaztanaga  
      Type:  Bugs                      |      Status:  new         
 Milestone:  To Be Determined          |   Component:  interprocess
   Version:  Boost 1.50.0              |    Severity:  Problem     
Resolution:                            |    Keywords:  mmap        
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Comment (by matthieu.dorier@…):

 Indeed you're right: fstat is the call that fails. When I pass the file
 descriptor of a shared memory object opened with shm_open, I get the error
 "Value too large for defined data type" (even though the size of the
 segment is only about 2500 bytes).

 If I understand the documentation of BlueGene/P, the filesystems functions
 (such as fstat) are all redirected to the parallel filesystem on remote
 nodes, without checking if the file descriptor corresponds to something
 local (such as a file in /dev/shm), which may explain why the call fails.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7235#comment:2>
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