comparison DEPENDENCIES/generic/include/boost/align/detail/aligned_alloc.hpp @ 102:f46d142149f5

Whoops, finish that update
author Chris Cannam
date Mon, 07 Sep 2015 11:13:41 +0100
parents
children
comparison
equal deleted inserted replaced
101:c530137014c0 102:f46d142149f5
1 /*
2 (c) 2014 Glen Joseph Fernandes
3 glenjofe at gmail dot com
4
5 Distributed under the Boost Software
6 License, Version 1.0.
7 http://boost.org/LICENSE_1_0.txt
8 */
9 #ifndef BOOST_ALIGN_DETAIL_ALIGNED_ALLOC_HPP
10 #define BOOST_ALIGN_DETAIL_ALIGNED_ALLOC_HPP
11
12 #include <boost/assert.hpp>
13 #include <boost/config.hpp>
14 #include <boost/align/align.hpp>
15 #include <boost/align/alignment_of.hpp>
16 #include <boost/align/detail/is_alignment.hpp>
17 #include <cstdlib>
18
19 namespace boost {
20 namespace alignment {
21 inline void* aligned_alloc(std::size_t alignment,
22 std::size_t size) BOOST_NOEXCEPT
23 {
24 BOOST_ASSERT(detail::is_alignment(alignment));
25 if (alignment < alignment_of<void*>::value) {
26 alignment = alignment_of<void*>::value;
27 }
28 std::size_t n = size + alignment - 1;
29 void* p1 = 0;
30 void* p2 = std::malloc(n + sizeof p1);
31 if (p2) {
32 p1 = static_cast<char*>(p2) + sizeof p1;
33 (void)align(alignment, size, p1, n);
34 *(static_cast<void**>(p1) - 1) = p2;
35 }
36 return p1;
37 }
38
39 inline void aligned_free(void* ptr)
40 BOOST_NOEXCEPT
41 {
42 if (ptr) {
43 void* p = *(static_cast<void**>(ptr) - 1);
44 std::free(p);
45 }
46 }
47 }
48 }
49
50 #endif