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56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2006-2007. 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_ipc_messageA
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#include <boost/interprocess/managed_shared_memory.hpp>
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int main ()
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{
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using namespace boost::interprocess;
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//A special shared memory from which we are
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//able to allocate raw memory buffers.
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//First remove any old shared memory of the same name, create
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//the shared memory segment and initialize needed resources
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shared_memory_object::remove("MySharedMemory");
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try{
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managed_shared_memory segment
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(create_only,
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"MySharedMemory", //segment name
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65536); //segment size in bytes
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//Allocate a portion of the segment
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void * shptr = segment.allocate(1024/*bytes to allocate*/);
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//An handle from the base address can identify any byte of the shared
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//memory segment even if it is mapped in different base addresses
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managed_shared_memory::handle_t handle = segment.get_handle_from_address(shptr);
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(void)handle;
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// Copy message to buffer
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// . . .
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// Send handle to other process
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// . . .
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// Wait response from other process
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// . . .
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//Deallocate the portion previously allocated
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segment.deallocate(shptr);
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}
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catch(...){
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shared_memory_object::remove("MySharedMemory");
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throw;
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}
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shared_memory_object::remove("MySharedMemory");
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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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