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/*
Copyright (C) 2012 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "libpbd-config.h"
#include <cstring>
#include <cerrno>
#include "pbd/malign.h"
#include "pbd/error.h"
#include "pbd/i18n.h"
using namespace PBD;
#if ( defined(__x86_64__) || defined(_M_X64) )
static const int CPU_CACHE_ALIGN = 64;
#else
static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */
#endif
int cache_aligned_malloc (void** memptr, size_t size)
{
#ifndef HAVE_POSIX_MEMALIGN
#ifdef PLATFORM_WINDOWS
if (((*memptr) = _aligned_malloc (size, CPU_CACHE_ALIGN)) == 0) {
fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
return errno;
} else {
return 0;
}
#else
if (((*memptr) = malloc (size)) == 0) {
fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
return errno;
} else {
return 0;
}
#endif
#else
if (posix_memalign (memptr, CPU_CACHE_ALIGN, size)) {
fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
}
return 0;
#endif
}
void cache_aligned_free (void* memptr)
{
#ifdef PLATFORM_WINDOWS
_aligned_free (memptr);
#else
free (memptr);
#endif
}
int aligned_malloc (void** memptr, size_t size, size_t alignment)
{
#ifndef HAVE_POSIX_MEMALIGN
#ifdef PLATFORM_WINDOWS
if (((*memptr) = _aligned_malloc (size, alignment)) == 0) {
fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
alignment, size, strerror (errno)) << endmsg;
return errno;
} else {
return 0;
}
#else
if (((*memptr) = malloc (size)) == 0) {
fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
alignment, size, strerror (errno)) << endmsg;
return errno;
} else {
return 0;
}
#endif
#else
if (posix_memalign (memptr, alignment, size)) {
fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
alignment, size, strerror (errno)) << endmsg;
}
return 0;
#endif
}
void aligned_free (void* memptr)
{
#ifdef PLATFORM_WINDOWS
_aligned_free (memptr);
#else
free (memptr);
#endif
}
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