[Boost-bugs] [Boost C++ Libraries] #4522: allocation problem after grow

Subject: [Boost-bugs] [Boost C++ Libraries] #4522: allocation problem after grow
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-08-08 06:40:04

#4522: allocation problem after grow
------------------------------------------------------------+---------------
 Reporter:  razzik@…                                        |       Owner:  igaztanaga  
     Type:  Bugs                                            |      Status:  new         
Milestone:  Boost 1.44.0                                    |   Component:  interprocess
  Version:  Boost 1.43.0                                    |    Severity:  Showstopper 
 Keywords:  interprocess shared_memory ipc grow allocation  |  
------------------------------------------------------------+---------------
 Hi,

 the allocation mechanism damaged by call grow() function...

 This part work fine:

 ''/*    Create SM - Size 100K*/[[BR]]managed_shared_memory
 shm(create_only, "MySM", 100*1024);[[BR]]/*    SM full size -
 100K*/[[BR]]int fullSMSize = shm.get_size();[[BR]]/*    SM mem size - 100K
 - sizeof(SM Header)*/[[BR]]int memSMSize  = shm.get_free_memory;[[BR]]/*
 alloc 64K in SM (64K<100K)*/[[BR]]void* ptr = shm.allocate(64*1024);''

 By adding grow function the allocate function throws exception:

 ''/*    Create SM - Size 100K*/[[BR]]managed_shared_memory
 shm(create_only, "MySM", 100*1024);[[BR]]'''/*    Grow SM By
 28K*/[[BR]]managed_shared_memory::grow("MySM",28*1024);[[BR]]'''/*    SM
 full size - 128K*/[[BR]]int fullSMSize = shm.get_size();[[BR]]/*    SM mem
 size - 128K - sizeof(SM Header)*/[[BR]]int memSMSize  =
 shm.get_free_memory;[[BR]]/*    alloc 64K in SM (64K<128K)*/[[BR]]void*
 ptr = shm.allocate(64*1024);''

 Thanks,
 Raz

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/4522>
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