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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2021-2021. 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/managed_shared_memory.hpp>
#include <boost/interprocess/sync/interprocess_semaphore.hpp>
#include <boost/interprocess/containers/list.hpp>
#include <cstring>
#include <cstdlib>
#include <string>
#include <iostream>
#include <cstdlib>
#include "../test/get_process_id_name.hpp"
using namespace boost::interprocess;
//Remove shared memory on construction and destruction
struct shm_remove
{
shm_remove() { shared_memory_object::remove(test::get_process_id_name()); }
~shm_remove(){ shared_memory_object::remove(test::get_process_id_name()); }
};
const std::size_t MemSize = 64u*1024u;
typedef list<int, allocator<int, managed_shared_memory::segment_manager> >
MyList;
int main(int argc, char *argv[])
{
std::string p_or_c = argc == 1 ? "parent" : "child";
BOOST_TRY {
if(argc == 1){ //Parent process
shm_remove remover; (void)remover;
shared_memory_object::remove(test::get_process_id_name());
shared_memory_object::remove(test::get_process_id_name());
//Create a shared memory object.
managed_shared_memory shm (create_only, test::get_process_id_name(), MemSize);
interprocess_semaphore *my_sem = shm.construct<interprocess_semaphore>("MySem")(0U);
//Launch child process
std::string s;
#ifdef BOOST_INTERPROCESS_WINDOWS
s += "START /B ";
#endif
s += argv[0];
s += " child ";
s += test::get_process_id_name();
#ifndef BOOST_INTERPROCESS_WINDOWS
s += " &";
#endif
if(0 != std::system(s.c_str()))
return 1;
//Wait for the other process
my_sem->wait();
for (unsigned i = 0; i != 10000; ++i) {
MyList *mylist = shm.construct<MyList>("MyList", std::nothrow)
(shm.get_segment_manager());
if(mylist){
shm.destroy_ptr(mylist);
}
}
//Wait for the other process
my_sem->wait();
}
else{
managed_shared_memory shm (open_only, argv[2]);
interprocess_semaphore *my_sem = shm.find<interprocess_semaphore>("MySem").first;
if (!my_sem)
return 1;
my_sem->post();
for (unsigned i = 0; i != 10000; ++i) {
MyList *mylist = shm.construct<MyList>("MyList", std::nothrow)
(shm.get_segment_manager());
if(mylist){
shm.destroy_ptr(mylist);
}
}
my_sem->post();
}
}
BOOST_CATCH(interprocess_exception &e){
std::cerr << p_or_c << " -> interprocess_exception::what(): " << e.what()
<< " native error: " << e.get_native_error()
<< " error code: " << e.get_error_code() << '\n';
return 2;
}
BOOST_CATCH(std::exception &e){
std::cerr << p_or_c << " -> std::exception::what(): " << e.what() << '\n';
return 3;
}
BOOST_CATCH_END
std::cerr << p_or_c << " -> Normal termination\n";
return 0;
}
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