142 lines
3.8 KiB
C++
Executable File
142 lines
3.8 KiB
C++
Executable File
/**
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* @file v3dmath_test.cpp
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* @author Vir
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* @date 2011-12
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* @brief v3dmath test cases.
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*
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* $LicenseInfo:firstyear=2011&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2011, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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// Tests related to allocating objects with alignment constraints, particularly for SSE support.
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#include "linden_common.h"
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#include "../test/lltut.h"
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#include "../llmath.h"
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#include "../llsimdmath.h"
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#include "../llvector4a.h"
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namespace tut
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{
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#define is_aligned(ptr,alignment) ((reinterpret_cast<uintptr_t>(ptr))%(alignment)==0)
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#define is_aligned_relative(ptr,base_ptr,alignment) ((reinterpret_cast<uintptr_t>(ptr)-reinterpret_cast<uintptr_t>(base_ptr))%(alignment)==0)
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struct alignment_test {};
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typedef test_group<alignment_test> alignment_test_t;
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typedef alignment_test_t::object alignment_test_object_t;
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tut::alignment_test_t tut_alignment_test("LLAlignment");
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LL_ALIGN_PREFIX(16)
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class MyVector4a
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{
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public:
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void* operator new(size_t size)
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{
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return ll_aligned_malloc_16(size);
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}
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void operator delete(void *p)
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{
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ll_aligned_free_16(p);
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}
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void* operator new[](size_t count)
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{ // try to allocate count bytes for an array
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return ll_aligned_malloc_16(count);
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}
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void operator delete[](void *p)
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{
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ll_aligned_free_16(p);
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}
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LLQuad mQ;
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} LL_ALIGN_POSTFIX(16);
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// Verify that aligned allocators perform as advertised.
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template<> template<>
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void alignment_test_object_t::test<1>()
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{
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# ifdef LL_DEBUG
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// skip("This test fails on Windows when compiled in debug mode.");
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# endif
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const int num_tests = 7;
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void *align_ptr;
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for (int i=0; i<num_tests; i++)
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{
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align_ptr = ll_aligned_malloc_16(sizeof(MyVector4a));
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ensure("ll_aligned_malloc_16 failed", is_aligned(align_ptr,16));
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align_ptr = ll_aligned_realloc_16(align_ptr,2*sizeof(MyVector4a), sizeof(MyVector4a));
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ensure("ll_aligned_realloc_16 failed", is_aligned(align_ptr,16));
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ll_aligned_free_16(align_ptr);
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align_ptr = ll_aligned_malloc_32(sizeof(MyVector4a));
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ensure("ll_aligned_malloc_32 failed", is_aligned(align_ptr,32));
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ll_aligned_free_32(align_ptr);
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}
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}
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// In-place allocation of objects and arrays.
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template<> template<>
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void alignment_test_object_t::test<2>()
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{
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MyVector4a vec1;
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ensure("LLAlignment vec1 unaligned", is_aligned(&vec1,16));
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MyVector4a veca[12];
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ensure("LLAlignment veca unaligned", is_aligned(veca,16));
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}
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// Heap allocation of objects and arrays.
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template<> template<>
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void alignment_test_object_t::test<3>()
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{
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# ifdef LL_DEBUG
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// skip("This test fails on Windows when compiled in debug mode.");
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# endif
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const int ARR_SIZE = 7;
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for(int i=0; i<ARR_SIZE; i++)
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{
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MyVector4a *vecp = new MyVector4a;
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ensure("LLAlignment vecp unaligned", is_aligned(vecp,16));
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delete vecp;
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}
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MyVector4a *veca = new MyVector4a[ARR_SIZE];
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//std::cout << "veca base is " << (S32) veca << std::endl;
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ensure("LLAligment veca base", is_aligned(veca,16));
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for(int i=0; i<ARR_SIZE; i++)
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{
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std::cout << "veca[" << i << "]" << std::endl;
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ensure("LLAlignment veca member unaligned", is_aligned(&veca[i],16));
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}
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delete [] veca;
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}
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}
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