source: pacpussensors/trunk/Vislab/lib3dv/eigen/test/unalignedassert.cpp@ 138

Last change on this file since 138 was 136, checked in by ldecherf, 8 years ago

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1// This file is part of Eigen, a lightweight C++ template library
2// for linear algebra.
3//
4// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
5//
6// This Source Code Form is subject to the terms of the Mozilla
7// Public License v. 2.0. If a copy of the MPL was not distributed
8// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
9
10#include "main.h"
11
12struct TestNew1
13{
14 MatrixXd m; // good: m will allocate its own array, taking care of alignment.
15 TestNew1() : m(20,20) {}
16};
17
18struct TestNew2
19{
20 Matrix3d m; // good: m's size isn't a multiple of 16 bytes, so m doesn't have to be 16-byte aligned,
21 // 8-byte alignment is good enough here, which we'll get automatically
22};
23
24struct TestNew3
25{
26 Vector2f m; // good: m's size isn't a multiple of 16 bytes, so m doesn't have to be 16-byte aligned
27};
28
29struct TestNew4
30{
31 EIGEN_MAKE_ALIGNED_OPERATOR_NEW
32 Vector2d m;
33 float f; // make the struct have sizeof%16!=0 to make it a little more tricky when we allow an array of 2 such objects
34};
35
36struct TestNew5
37{
38 EIGEN_MAKE_ALIGNED_OPERATOR_NEW
39 float f; // try the f at first -- the EIGEN_ALIGN16 attribute of m should make that still work
40 Matrix4f m;
41};
42
43struct TestNew6
44{
45 Matrix<float,2,2,DontAlign> m; // good: no alignment requested
46 float f;
47};
48
49template<bool Align> struct Depends
50{
51 EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(Align)
52 Vector2d m;
53 float f;
54};
55
56template<typename T>
57void check_unalignedassert_good()
58{
59 T *x, *y;
60 x = new T;
61 delete x;
62 y = new T[2];
63 delete[] y;
64}
65
66#if EIGEN_ALIGN_STATICALLY
67template<typename T>
68void construct_at_boundary(int boundary)
69{
70 char buf[sizeof(T)+256];
71 size_t _buf = reinterpret_cast<size_t>(buf);
72 _buf += (16 - (_buf % 16)); // make 16-byte aligned
73 _buf += boundary; // make exact boundary-aligned
74 T *x = ::new(reinterpret_cast<void*>(_buf)) T;
75 x[0].setZero(); // just in order to silence warnings
76 x->~T();
77}
78#endif
79
80void unalignedassert()
81{
82 #if EIGEN_ALIGN_STATICALLY
83 construct_at_boundary<Vector2f>(4);
84 construct_at_boundary<Vector3f>(4);
85 construct_at_boundary<Vector4f>(16);
86 construct_at_boundary<Matrix2f>(16);
87 construct_at_boundary<Matrix3f>(4);
88 construct_at_boundary<Matrix4f>(16);
89
90 construct_at_boundary<Vector2d>(16);
91 construct_at_boundary<Vector3d>(4);
92 construct_at_boundary<Vector4d>(16);
93 construct_at_boundary<Matrix2d>(16);
94 construct_at_boundary<Matrix3d>(4);
95 construct_at_boundary<Matrix4d>(16);
96
97 construct_at_boundary<Vector2cf>(16);
98 construct_at_boundary<Vector3cf>(4);
99 construct_at_boundary<Vector2cd>(16);
100 construct_at_boundary<Vector3cd>(16);
101 #endif
102
103 check_unalignedassert_good<TestNew1>();
104 check_unalignedassert_good<TestNew2>();
105 check_unalignedassert_good<TestNew3>();
106
107 check_unalignedassert_good<TestNew4>();
108 check_unalignedassert_good<TestNew5>();
109 check_unalignedassert_good<TestNew6>();
110 check_unalignedassert_good<Depends<true> >();
111
112#if EIGEN_ALIGN_STATICALLY
113 VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4f>(8));
114 VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix4f>(8));
115 VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2d>(8));
116 VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4d>(8));
117 VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix2d>(8));
118 VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix4d>(8));
119 VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2cf>(8));
120 VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2cd>(8));
121#endif
122}
123
124void test_unalignedassert()
125{
126 CALL_SUBTEST(unalignedassert());
127}
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