Realistic 3D camera system
3D camera system components
allocator.hpp
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1 //
2 // allocator.hpp
3 // ~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
6 //
7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9 //
10 
11 #ifndef ALLOCATOR_HPP
12 #define ALLOCATOR_HPP
13 
14 #include <boost/aligned_storage.hpp>
15 
16 // Represents a single connection from a client.
17 class allocator
18 {
19 public:
21  : in_use_(false)
22  {
23  }
24 
25  void* allocate(std::size_t n)
26  {
27  if (in_use_ || n >= 1024)
28  return ::operator new(n);
29  in_use_ = true;
30  return static_cast<void*>(&space_);
31  }
32 
33  void deallocate(void* p)
34  {
35  if (p != static_cast<void*>(&space_))
36  ::operator delete(p);
37  else
38  in_use_ = false;
39  }
40 
41 private:
42  allocator(const allocator&);
43  allocator& operator=(const allocator&);
44 
45  // Whether the reusable memory space is currently in use.
46  bool in_use_;
47 
48  // The reusable memory space made available by the allocator.
49  boost::aligned_storage<1024>::type space_;
50 };
51 
52 #endif // ALLOCATOR_HPP
void * allocate(std::size_t n)
Definition: allocator.hpp:25
void deallocate(void *p)
Definition: allocator.hpp:33