3c6b7c8b43
Change-Id: I877bc0927aff7d175c1978fdf3db55d2e048d3b9 Reviewed-on: https://gerrit.libreoffice.org/33510 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
80 lines
2 KiB
C++
80 lines
2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* This file is part of the LibreOffice project.
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
#ifndef INCLUDED_SC_INC_STLALGORITHM_HXX
|
|
#define INCLUDED_SC_INC_STLALGORITHM_HXX
|
|
|
|
#include <functional>
|
|
#include <limits>
|
|
|
|
#include <rtl/alloc.h>
|
|
|
|
namespace sc {
|
|
|
|
/**
|
|
* Custom allocator for STL container to ensure that the base address of
|
|
* allocated storage is aligned to a specified boundary.
|
|
*/
|
|
template<typename T, size_t Alignment>
|
|
class AlignedAllocator
|
|
{
|
|
public:
|
|
typedef T value_type;
|
|
typedef size_t size_type;
|
|
typedef std::ptrdiff_t difference_type;
|
|
|
|
typedef T* pointer;
|
|
typedef const T* const_pointer;
|
|
typedef T* void_pointer;
|
|
|
|
typedef T& reference;
|
|
typedef const T& const_reference;
|
|
|
|
template<typename Type2>
|
|
struct rebind
|
|
{
|
|
typedef AlignedAllocator<Type2,Alignment> other;
|
|
};
|
|
|
|
AlignedAllocator() {}
|
|
|
|
template<typename Type2>
|
|
AlignedAllocator(const AlignedAllocator<Type2,Alignment>&) {}
|
|
|
|
static void construct(T* p, const value_type& val) { new(p) value_type(val); }
|
|
static void destroy(T* p)
|
|
{
|
|
p->~value_type();
|
|
(void)p; // avoid bogus MSVC '12 "unreferenced formal parameter" warning
|
|
}
|
|
|
|
static size_type max_size()
|
|
{
|
|
return std::numeric_limits<size_type>::max() / sizeof(value_type);
|
|
}
|
|
|
|
bool operator== (const AlignedAllocator&) const { return true; }
|
|
bool operator!= (const AlignedAllocator&) const { return false; }
|
|
|
|
static pointer allocate(size_type n)
|
|
{
|
|
return static_cast<pointer>(rtl_allocateAlignedMemory(Alignment, n*sizeof(value_type)));
|
|
}
|
|
|
|
static void deallocate(pointer p, size_type)
|
|
{
|
|
rtl_freeAlignedMemory(p);
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|