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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_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;
- //<-
- (void)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;
- }
- //]
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