| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (C) Copyright Ion Gaztanaga 2006-2009. 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; |
| |
| //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]; |
| |
| //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> |