| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (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_conditionA |
| #include <boost/interprocess/shared_memory_object.hpp> |
| #include <boost/interprocess/mapped_region.hpp> |
| #include <boost/interprocess/sync/scoped_lock.hpp> |
| #include <iostream> |
| #include <cstdio> |
| #include "doc_anonymous_condition_shared_data.hpp" |
| |
| using namespace boost::interprocess; |
| |
| int main () |
| { |
| |
| //Erase previous shared memory and schedule erasure on exit |
| struct shm_remove |
| { |
| shm_remove() { shared_memory_object::remove("MySharedMemory"); } |
| ~shm_remove(){ shared_memory_object::remove("MySharedMemory"); } |
| } remover; |
| |
| //Create a shared memory object. |
| shared_memory_object shm |
| (create_only //only create |
| ,"MySharedMemory" //name |
| ,read_write //read-write mode |
| ); |
| try{ |
| //Set size |
| shm.truncate(sizeof(trace_queue)); |
| |
| //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(); |
| |
| //Construct the shared structure in memory |
| trace_queue * data = new (addr) trace_queue; |
| |
| const int NumMsg = 100; |
| |
| for(int i = 0; i < NumMsg; ++i){ |
| scoped_lock<interprocess_mutex> lock(data->mutex); |
| if(data->message_in){ |
| data->cond_full.wait(lock); |
| } |
| if(i == (NumMsg-1)) |
| std::sprintf(data->items, "%s", "last message"); |
| else |
| std::sprintf(data->items, "%s_%d", "my_trace", i); |
| |
| //Notify to the other process that there is a message |
| data->cond_empty.notify_one(); |
| |
| //Mark message buffer as full |
| data->message_in = true; |
| } |
| } |
| catch(interprocess_exception &ex){ |
| std::cout << ex.what() << std::endl; |
| return 1; |
| } |
| |
| return 0; |
| } |
| //] |