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