2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
4 * This file is part of CasparCG (www.casparcg.com).
6 * CasparCG is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * CasparCG is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
19 * Author: Robert Nagy, ronag89@gmail.com
28 void* alloc_page_locked(size_t size);
29 void free_page_locked(void* p);
34 class page_locked_allocator
37 typedef size_t size_type;
38 typedef ptrdiff_t difference_type;
40 typedef const T* const_pointer;
42 typedef const T& const_reference;
45 page_locked_allocator() {}
46 page_locked_allocator(const page_locked_allocator&) {}
48 pointer allocate(size_type n, const void * = 0)
50 return reinterpret_cast<T*>(detail::alloc_page_locked(n));
53 void deallocate(void* p, size_type)
55 detail::free_page_locked(p);
58 pointer address(reference x) const { return &x; }
59 const_pointer address(const_reference x) const { return &x; }
60 page_locked_allocator<T>& operator=(const page_locked_allocator&) { return *this; }
61 void construct(pointer p, const T& val) { new ((T*) p) T(val); }
62 void destroy(pointer p) { p->~T(); }
64 size_type max_size() const { return size_t(-1); }
67 struct rebind { typedef page_locked_allocator<U> other; };
70 page_locked_allocator(const page_locked_allocator<U>&) {}
73 page_locked_allocator& operator=(const page_locked_allocator<U>&) { return *this; }