{

using namespace boost::interprocess;

//Remove shared memory on construction and destruction

struct shm_remove

{

//<-

#if 1

shm_remove() { shared_memory_object::remove(test::get_process_id_name()); }

~shm_remove(){ shared_memory_object::remove(test::get_process_id_name()); }

#else

#endif

//->

} remover;

//<-

(void)remover;

//->

{

//Create a managed shared memory

//<-

#if 1

managed_shared_memory shm(create_only, test::get_process_id_name(), 1000);

#else

#endif

//->

//Check size

assert(shm.get_size() == 1000);

//Construct a named object

MyClass *myclass = shm.construct<MyClass>("MyClass")();

//The managed segment is unmapped here

//<-

(void)myclass;

//->

}

{

//Now that the segment is not mapped grow it adding extra 500 bytes

//<-

#if 1

managed_shared_memory::grow(test::get_process_id_name(), 500);

#else

#endif

//->

//Map it again

//<-

#if 1

managed_shared_memory shm(open_only, test::get_process_id_name());

#else

#endif

//->

//Check size

assert(shm.get_size() == 1500);

//Check "MyClass" is still there

MyClass *myclass = shm.find<MyClass>("MyClass").first;

assert(myclass != 0);

//<-

(void)myclass;

//->

//The managed segment is unmapped here

}

{

//Now minimize the size of the segment

//<-

#if 1

managed_shared_memory::shrink_to_fit(test::get_process_id_name());

#else

#endif

//->

//Map it again

//<-

#if 1

managed_shared_memory shm(open_only, test::get_process_id_name());

#else

#endif

//->

//Check size

assert(shm.get_size() < 1000);

//Check "MyClass" is still there

MyClass *myclass = shm.find<MyClass>("MyClass").first;

assert(myclass != 0);

//The managed segment is unmapped here

//<-

(void)myclass;

//->

}

return 0;