1 | /* |
2 | * Copyright (c) 2017, Intel Corporation |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions are met: |
6 | * |
7 | * * Redistributions of source code must retain the above copyright notice, |
8 | * this list of conditions and the following disclaimer. |
9 | * * Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * * Neither the name of Intel Corporation nor the names of its contributors |
13 | * may be used to endorse or promote products derived from this software |
14 | * without specific prior written permission. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | #ifndef UTIL_SMALL_VECTOR_H |
30 | #define UTIL_SMALL_VECTOR_H |
31 | |
32 | #include <vector> |
33 | |
34 | #include <boost/version.hpp> |
35 | |
36 | /* |
37 | * We use the small_vector constructors introduced in Boost 1.61 (trac bug |
38 | * #11866, github commit b436c91). If the Boost version is too old, we fall |
39 | * back to using std::vector. |
40 | */ |
41 | #if BOOST_VERSION >= 106100 |
42 | # define HAVE_BOOST_CONTAINER_SMALL_VECTOR |
43 | #endif |
44 | |
45 | #if defined(HAVE_BOOST_CONTAINER_SMALL_VECTOR) |
46 | # include <boost/container/small_vector.hpp> |
47 | #endif |
48 | |
49 | namespace ue2 { |
50 | |
51 | #if defined(HAVE_BOOST_CONTAINER_SMALL_VECTOR) |
52 | |
53 | template <class T, std::size_t N, |
54 | typename Allocator = boost::container::new_allocator<T>> |
55 | using small_vector = boost::container::small_vector<T, N, Allocator>; |
56 | |
57 | #else |
58 | |
59 | // Boost version isn't new enough, fall back to just using std::vector. |
60 | template <class T, std::size_t N, typename Allocator = std::allocator<T>> |
61 | using small_vector = std::vector<T, Allocator>; |
62 | |
63 | // Support workarounds for flat_set/flat_map and GCC 4.8. |
64 | #define SMALL_VECTOR_IS_STL_VECTOR 1 |
65 | |
66 | #endif // HAVE_BOOST_CONTAINER_SMALL_VECTOR |
67 | |
68 | } // namespace ue2 |
69 | |
70 | #endif // UTIL_SMALL_VECTOR_H |
71 | |