| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (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_conditionB |
| #include <boost/interprocess/shared_memory_object.hpp> |
| #include <boost/interprocess/mapped_region.hpp> |
| #include <boost/interprocess/sync/scoped_lock.hpp> |
| #include <iostream> |
| #include <cstring> |
| #include "doc_anonymous_condition_shared_data.hpp" |
| |
| using namespace boost::interprocess; |
| |
| int main () |
| { |
| //Create a shared memory object. |
| shared_memory_object shm |
| (open_only //only create |
| ,"MySharedMemory" //name |
| ,read_write //read-write mode |
| ); |
| |
| try{ |
| //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 a pointer to the shared structure |
| trace_queue * data = static_cast<trace_queue*>(addr); |
| |
| //Print messages until the other process marks the end |
| bool end_loop = false; |
| do{ |
| scoped_lock<interprocess_mutex> lock(data->mutex); |
| if(!data->message_in){ |
| data->cond_empty.wait(lock); |
| } |
| if(std::strcmp(data->items, "last message") == 0){ |
| end_loop = true; |
| } |
| else{ |
| //Print the message |
| std::cout << data->items << std::endl; |
| //Notify the other process that the buffer is empty |
| data->message_in = false; |
| data->cond_full.notify_one(); |
| } |
| } |
| while(!end_loop); |
| } |
| catch(interprocess_exception &ex){ |
| std::cout << ex.what() << std::endl; |
| return 1; |
| } |
| |
| return 0; |
| } |
| //] |
| #include <boost/interprocess/detail/config_end.hpp> |