320da29922
Added new function which accepts argument to specify required alignment. AudioPort buffer requires 32 byte alignment [Review Required] YPosdnyakov
116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
/*
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Copyright (C) 2012 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "libpbd-config.h"
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#include <cstring>
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#include <cerrno>
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#include "pbd/malign.h"
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#include "pbd/error.h"
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#include "i18n.h"
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using namespace PBD;
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#if ( defined(__x86_64__) || defined(_M_X64) )
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static const int CPU_CACHE_ALIGN = 64;
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#else
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static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */
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#endif
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int cache_aligned_malloc (void** memptr, size_t size)
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{
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#ifndef HAVE_POSIX_MEMALIGN
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#ifdef PLATFORM_WINDOWS
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if (((*memptr) = _aligned_malloc (size, CPU_CACHE_ALIGN)) == 0) {
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fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
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CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
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return errno;
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} else {
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return 0;
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}
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#else
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std::string << string_compose (_("Memory allocation error: malloc (%1 * %2)"),
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CPU_CACHE_ALIGN, size) << endmsg;
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if (((*memptr) = malloc (size)) == 0) {
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fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
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CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
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return errno;
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} else {
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return 0;
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}
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#endif
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#else
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if (posix_memalign (memptr, CPU_CACHE_ALIGN, size)) {
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fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
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CPU_CACHE_ALIGN, size, strerror (errno)) << endmsg;
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}
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return 0;
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#endif
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}
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void cache_aligned_free (void* memptr)
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{
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#ifdef PLATFORM_WINDOWS
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_aligned_free (memptr);
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#else
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free (memptr);
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#endif
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}
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int aligned_malloc (void** memptr, size_t size, size_t alignment)
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{
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#ifndef HAVE_POSIX_MEMALIGN
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#ifdef PLATFORM_WINDOWS
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if (((*memptr) = _aligned_malloc (size, alignment)) == 0) {
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fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
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alignment, size, strerror (errno)) << endmsg;
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return errno;
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} else {
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return 0;
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}
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#else
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if (((*memptr) = malloc (size)) == 0) {
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fatal << string_compose (_("Memory allocation error: malloc (%1 * %2) failed (%3)"),
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alignment, size, strerror (errno)) << endmsg;
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return errno;
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} else {
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return 0;
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}
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#endif
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#else
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if (posix_memalign (memptr, alignment, size)) {
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fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
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alignment, size, strerror (errno)) << endmsg;
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}
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return 0;
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#endif
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}
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void aligned_free (void* memptr)
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{
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#ifdef PLATFORM_WINDOWS
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_aligned_free (memptr);
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#else
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free (memptr);
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#endif
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} |