2 Copyright (C) 2012 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "libpbd-config.h"
25 #include "pbd/malign.h"
26 #include "pbd/error.h"
32 #if ( defined(__x86_64__) || defined(_M_X64) )
33 static const int CPU_CACHE_ALIGN = 64;
35 static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */
38 int cache_aligned_malloc (void** memptr, size_t size)
40 #ifndef HAVE_POSIX_MEMALIGN
41 #ifdef PLATFORM_WINDOWS
42 if (((*memptr) = _aligned_malloc (size, CPU_CACHE_ALIGN)) == 0) {
43 fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
44 CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
50 if (((*memptr) = malloc (size)) == 0) {
51 fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
52 CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
59 if (posix_memalign (memptr, CPU_CACHE_ALIGN, size)) {
60 fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
61 CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
68 void cache_aligned_free (void* memptr)
70 #ifdef PLATFORM_WINDOWS
71 _aligned_free (memptr);
77 int aligned_malloc (void** memptr, size_t size, size_t alignment)
79 #ifndef HAVE_POSIX_MEMALIGN
80 #ifdef PLATFORM_WINDOWS
81 if (((*memptr) = _aligned_malloc (size, alignment)) == 0) {
82 fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
83 alignment, size, strerror (errno)) << endmsg;
89 if (((*memptr) = malloc (size)) == 0) {
90 fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
91 alignment, size, strerror (errno)) << endmsg;
98 if (posix_memalign (memptr, alignment, size)) {
99 fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
100 alignment, size, strerror (errno)) << endmsg;
107 void aligned_free (void* memptr)
109 #ifdef PLATFORM_WINDOWS
110 _aligned_free (memptr);