68 lines
1.9 KiB
C++
68 lines
1.9 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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//[doc_anonymous_semaphoreA
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#include <boost/interprocess/shared_memory_object.hpp>
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#include <boost/interprocess/mapped_region.hpp>
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#include <iostream>
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#include "doc_anonymous_semaphore_shared_data.hpp"
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using namespace boost::interprocess;
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int main ()
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{
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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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shm_remove() { shared_memory_object::remove("MySharedMemory"); }
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~shm_remove(){ shared_memory_object::remove("MySharedMemory"); }
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} remover;
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//<-
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(void)remover;
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//->
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//Create a shared memory object.
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shared_memory_object shm
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(create_only //only create
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,"MySharedMemory" //name
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,read_write //read-write mode
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);
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//Set size
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shm.truncate(sizeof(shared_memory_buffer));
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//Map the whole shared memory in this process
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mapped_region region
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(shm //What to map
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,read_write //Map it as read-write
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);
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//Get the address of the mapped region
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void * addr = region.get_address();
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//Construct the shared structure in memory
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shared_memory_buffer * data = new (addr) shared_memory_buffer;
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const int NumMsg = 100;
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//Insert data in the array
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for(int i = 0; i < NumMsg; ++i){
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data->nempty.wait();
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data->mutex.wait();
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data->items[i % shared_memory_buffer::NumItems] = i;
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data->mutex.post();
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data->nstored.post();
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}
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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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