align.h

Go to the documentation of this file.

//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef PXR_BASE_ARCH_ALIGN_H
#define PXR_BASE_ARCH_ALIGN_H
 
 
#if !defined(__cplusplus)
#error This include file can only be included in C++ programs.
#endif
 
#include "pxr/pxr.h"
#include "pxr/base/arch/api.h"
#include "pxr/base/arch/defines.h"
#include <cstddef>
#include <cstdint>
 
PXR_NAMESPACE_OPEN_SCOPE
 
 
inline size_t
ArchAlignMemorySize(size_t nBytes) {
    return (nBytes + 7) & (~0x7);
}
 
#define ARCH_MAX_ALIGNMENT_INCREASE     7
 
inline void *
ArchAlignMemory(void *base)
{
    return reinterpret_cast<void *>
        ((reinterpret_cast<uintptr_t>(base) + 7) & ~0x7);
}
 
#if defined(ARCH_OS_DARWIN) && defined(ARCH_CPU_ARM)
#define ARCH_CACHE_LINE_SIZE 128
#else
#define ARCH_CACHE_LINE_SIZE 64
#endif
 
ARCH_API
void *
ArchAlignedAlloc(size_t alignment, size_t size);
 
ARCH_API
void
ArchAlignedFree(void* ptr);
 
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif  // PXR_BASE_ARCH_ALIGN_H