align.h

Go to the documentation of this file.

//
// Copyright 2016 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
// Modified by Jeremy Retailleau.
 
#ifndef PXR_ARCH_ALIGN_H
#define PXR_ARCH_ALIGN_H
 
 
#if !defined(__cplusplus)
#error This include file can only be included in C++ programs.
#endif
 
#include "./api.h"
#include "./defines.h"
#include <cstddef>
#include <cstdint>
 
namespace pxr {
 
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);
 
}  // namespace pxr
 
#endif  // PXR_ARCH_ALIGN_H