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- //////////////////////////////////////////////////////////////////////////////
- //
- // (C) Copyright Ion Gaztanaga 2006-2012. Distributed under the Boost
- // Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
- // See http://www.boost.org/libs/interprocess for documentation.
- //
- //////////////////////////////////////////////////////////////////////////////
- #include <boost/interprocess/detail/config_begin.hpp>
- //[doc_anonymous_semaphoreB
- #include <boost/interprocess/shared_memory_object.hpp>
- #include <boost/interprocess/mapped_region.hpp>
- #include <iostream>
- #include "doc_anonymous_semaphore_shared_data.hpp"
- using namespace boost::interprocess;
- int main ()
- {
- //Remove shared memory on destruction
- struct shm_remove
- {
- ~shm_remove(){ shared_memory_object::remove("MySharedMemory"); }
- } remover;
- //<-
- (void)remover;
- //->
- //Create a shared memory object.
- shared_memory_object shm
- (open_only //only create
- ,"MySharedMemory" //name
- ,read_write //read-write mode
- );
- //Map the whole shared memory in this process
- mapped_region region
- (shm //What to map
- ,read_write //Map it as read-write
- );
- //Get the address of the mapped region
- void * addr = region.get_address();
- //Obtain the shared structure
- shared_memory_buffer * data = static_cast<shared_memory_buffer*>(addr);
- const int NumMsg = 100;
- int extracted_data [NumMsg];
- //<-
- (void)extracted_data;
- //->
- //Extract the data
- for(int i = 0; i < NumMsg; ++i){
- data->nstored.wait();
- data->mutex.wait();
- extracted_data[i] = data->items[i % shared_memory_buffer::NumItems];
- data->mutex.post();
- data->nempty.post();
- }
- return 0;
- }
- //]
- #include <boost/interprocess/detail/config_end.hpp>
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