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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/workaround.hpp>

//[doc_managed_heap_memory

#include <boost/container/list.hpp>

#include <boost/interprocess/managed_heap_memory.hpp>

#include <boost/interprocess/allocators/allocator.hpp>

#include <cstddef>

using namespace boost::interprocess;

typedef boost::container::list<int, allocator<int, managed_heap_memory::segment_manager> >

MyList;

int main ()

{

//We will create a buffer of 1000 bytes to store a list

managed_heap_memory heap_memory(1000);

MyList * mylist = heap_memory.construct<MyList>("MyList")

(heap_memory.get_segment_manager());

//Obtain handle, that identifies the list in the buffer

managed_heap_memory::handle_t list_handle = heap_memory.get_handle_from_address(mylist);

//Fill list until there is no more memory in the buffer

BOOST_INTERPROCESS_TRY{

while(1) {

mylist->insert(mylist->begin(), 0);

}

BOOST_INTERPROCESS_CATCH(const bad_alloc &){

//memory is full

} BOOST_INTERPROCESS_CATCH_END

//Let's obtain the size of the list

MyList::size_type old_size = mylist->size();

//<-

(void)old_size;

//->

//To make the list bigger, let's increase the heap buffer

//in 1000 bytes more.

heap_memory.grow(1000);

//If memory has been reallocated, the old pointer is invalid, so

//use previously obtained handle to find the new pointer.

mylist = static_cast<MyList *>

(heap_memory.get_address_from_handle(list_handle));

//Fill list until there is no more memory in the buffer

BOOST_INTERPROCESS_TRY{

while(1) {

mylist->insert(mylist->begin(), 0);

}

BOOST_INTERPROCESS_CATCH(const bad_alloc &){

//memory is full

} BOOST_INTERPROCESS_CATCH_END

//Let's obtain the new size of the list

MyList::size_type new_size = mylist->size();

//<-

(void)new_size;

//->

assert(new_size > old_size);

//Destroy list

heap_memory.destroy_ptr(mylist);

return 0;

}

//]

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