Library/boost/libs/interprocess/test/allocexcept_test.cpp - main - BirdLeon/ROBLOX2016

Library/boost/libs/interprocess/test/allocexcept_test.cpp
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19 дек 2024, 19:11
19 дек 2024, 19:1105db15d
//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2004-2012. 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/allocators/allocator.hpp>
#include <boost/interprocess/managed_shared_memory.hpp>
#include <boost/interprocess/containers/vector.hpp>
#include <boost/interprocess/containers/list.hpp>
#include <iostream>
#include <functional>
#include "print_container.hpp"
#include <string>
#include "get_process_id_name.hpp"

struct InstanceCounter
{
   InstanceCounter(){++counter;}
   InstanceCounter(const InstanceCounter&){++counter;}
  ~InstanceCounter(){--counter;}
   static std::size_t counter;
};

std::size_t InstanceCounter::counter = 0;

using namespace boost::interprocess;


int main ()
{
   const int memsize = 16384;
   const char *const shMemName = test::get_process_id_name();

   try{
   shared_memory_object::remove(shMemName);

   //Named allocate capable shared mem allocator
   managed_shared_memory segment(create_only, shMemName, memsize);

   //STL compatible allocator object, uses allocate(), deallocate() functions
   typedef allocator<InstanceCounter,
                     managed_shared_memory::segment_manager>
      inst_allocator_t;
   const inst_allocator_t myallocator (segment.get_segment_manager());

   typedef vector<InstanceCounter, inst_allocator_t> MyVect;

   //We'll provoke an exception, let's see if exception handling works
   try{
      //Fill vector until there is no more memory
      MyVect myvec(myallocator);
      int i;
      for(i = 0; true; ++i){
         myvec.push_back(InstanceCounter());
      }
   }
   catch(boost::interprocess::bad_alloc &){
      if(InstanceCounter::counter != 0)
         return 1;
   }

   //We'll provoke an exception, let's see if exception handling works
   try{
      //Fill vector at the beginning until there is no more memory
      MyVect myvec(myallocator);
      int i;
      InstanceCounter ic;
      for(i = 0; true; ++i){
         myvec.insert(myvec.begin(), i, ic);
      }
   }
   catch(boost::interprocess::bad_alloc &){
      if(InstanceCounter::counter != 0)
         return 1;
   }
   catch(std::length_error &){
      if(InstanceCounter::counter != 0)
         return 1;
   }
   }
   catch(...){
      shared_memory_object::remove(shMemName);
      throw;
   }
   shared_memory_object::remove(shMemName);
   return 0;
}