////////////////////////////////////////////////////////////////////////////// // // (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> #include <boost/interprocess/detail/workaround.hpp> //[doc_managed_heap_memory #include <boost/interprocess/containers/list.hpp> #include <boost/interprocess/managed_heap_memory.hpp> #include <boost/interprocess/allocators/allocator.hpp> #include <cstddef> using namespace boost::interprocess; typedef 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 try{ while(1) { mylist->insert(mylist->begin(), 0); } } catch(const bad_alloc &){ //memory is full } //Let's obtain the size of the list std::size_t old_size = mylist->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 try{ while(1) { mylist->insert(mylist->begin(), 0); } } catch(const bad_alloc &){ //memory is full } //Let's obtain the new size of the list std::size_t new_size = mylist->size(); assert(new_size > old_size); //Destroy list heap_memory.destroy_ptr(mylist); return 0; } //] #include <boost/interprocess/detail/config_end.hpp>