128 lines
3.4 KiB
C++
128 lines
3.4 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#include "main.h"
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struct TestNew1
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{
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MatrixXd m; // good: m will allocate its own array, taking care of alignment.
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TestNew1() : m(20,20) {}
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};
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struct TestNew2
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{
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Matrix3d m; // good: m's size isn't a multiple of 16 bytes, so m doesn't have to be 16-byte aligned,
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// 8-byte alignment is good enough here, which we'll get automatically
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};
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struct TestNew3
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{
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Vector2f m; // good: m's size isn't a multiple of 16 bytes, so m doesn't have to be 16-byte aligned
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};
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struct TestNew4
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{
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EIGEN_MAKE_ALIGNED_OPERATOR_NEW
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Vector2d m;
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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
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};
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struct TestNew5
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{
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EIGEN_MAKE_ALIGNED_OPERATOR_NEW
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float f; // try the f at first -- the EIGEN_ALIGN16 attribute of m should make that still work
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Matrix4f m;
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};
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struct TestNew6
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{
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Matrix<float,2,2,DontAlign> m; // good: no alignment requested
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float f;
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};
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template<bool Align> struct Depends
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{
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EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(Align)
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Vector2d m;
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float f;
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};
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template<typename T>
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void check_unalignedassert_good()
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{
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T *x, *y;
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x = new T;
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delete x;
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y = new T[2];
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delete[] y;
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}
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#if EIGEN_ALIGN_STATICALLY
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template<typename T>
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void construct_at_boundary(int boundary)
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{
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char buf[sizeof(T)+256];
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size_t _buf = reinterpret_cast<size_t>(buf);
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_buf += (16 - (_buf % 16)); // make 16-byte aligned
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_buf += boundary; // make exact boundary-aligned
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T *x = ::new(reinterpret_cast<void*>(_buf)) T;
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x[0].setZero(); // just in order to silence warnings
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x->~T();
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}
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#endif
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void unalignedassert()
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{
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#if EIGEN_ALIGN_STATICALLY
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construct_at_boundary<Vector2f>(4);
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construct_at_boundary<Vector3f>(4);
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construct_at_boundary<Vector4f>(16);
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construct_at_boundary<Matrix2f>(16);
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construct_at_boundary<Matrix3f>(4);
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construct_at_boundary<Matrix4f>(16);
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construct_at_boundary<Vector2d>(16);
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construct_at_boundary<Vector3d>(4);
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construct_at_boundary<Vector4d>(16);
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construct_at_boundary<Matrix2d>(16);
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construct_at_boundary<Matrix3d>(4);
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construct_at_boundary<Matrix4d>(16);
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construct_at_boundary<Vector2cf>(16);
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construct_at_boundary<Vector3cf>(4);
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construct_at_boundary<Vector2cd>(16);
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construct_at_boundary<Vector3cd>(16);
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#endif
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check_unalignedassert_good<TestNew1>();
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check_unalignedassert_good<TestNew2>();
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check_unalignedassert_good<TestNew3>();
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check_unalignedassert_good<TestNew4>();
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check_unalignedassert_good<TestNew5>();
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check_unalignedassert_good<TestNew6>();
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check_unalignedassert_good<Depends<true> >();
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#if EIGEN_ALIGN_STATICALLY
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VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4f>(8));
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VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix4f>(8));
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VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2d>(8));
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VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4d>(8));
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VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix2d>(8));
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VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix4d>(8));
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VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2cf>(8));
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VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2cd>(8));
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#endif
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}
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void test_unalignedassert()
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{
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CALL_SUBTEST(unalignedassert());
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}
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