88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2006-2012. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#include <boost/interprocess/detail/config_begin.hpp>
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#include <boost/interprocess/detail/workaround.hpp>
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//[doc_cont
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#include <boost/interprocess/containers/vector.hpp>
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#include <boost/interprocess/allocators/allocator.hpp>
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#include <boost/interprocess/managed_shared_memory.hpp>
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//<-
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#include "../test/get_process_id_name.hpp"
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//->
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int main ()
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{
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using namespace boost::interprocess;
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//Remove shared memory on construction and destruction
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struct shm_remove
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{
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//<-
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#if 1
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shm_remove() { shared_memory_object::remove(test::get_process_id_name()); }
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~shm_remove(){ shared_memory_object::remove(test::get_process_id_name()); }
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#else
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//->
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shm_remove() { shared_memory_object::remove("MySharedMemory"); }
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~shm_remove(){ shared_memory_object::remove("MySharedMemory"); }
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//<-
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#endif
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//->
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} remover;
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//<-
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(void)remover;
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//->
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//A managed shared memory where we can construct objects
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//associated with a c-string
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//<-
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#if 1
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managed_shared_memory segment(create_only,test::get_process_id_name(), 65536);
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#else
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//->
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managed_shared_memory segment(create_only,
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"MySharedMemory", //segment name
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65536);
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//<-
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#endif
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//->
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//Alias an STL-like allocator of ints that allocates ints from the segment
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typedef allocator<int, managed_shared_memory::segment_manager>
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ShmemAllocator;
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//Alias a vector that uses the previous STL-like allocator
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typedef vector<int, ShmemAllocator> MyVector;
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int initVal[] = {0, 1, 2, 3, 4, 5, 6 };
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const int *begVal = initVal;
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const int *endVal = initVal + sizeof(initVal)/sizeof(initVal[0]);
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//Initialize the STL-like allocator
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const ShmemAllocator alloc_inst (segment.get_segment_manager());
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//Construct the vector in the shared memory segment with the STL-like allocator
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//from a range of iterators
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MyVector *myvector =
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segment.construct<MyVector>
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("MyVector")/*object name*/
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(begVal /*first ctor parameter*/,
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endVal /*second ctor parameter*/,
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alloc_inst /*third ctor parameter*/);
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//Use vector as your want
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std::sort(myvector->rbegin(), myvector->rend());
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// . . .
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//When done, destroy and delete vector from the segment
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segment.destroy<MyVector>("MyVector");
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return 0;
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}
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//]
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#include <boost/interprocess/detail/config_end.hpp>
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