83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/* dvdisaster: Additional error correction for optical media.
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* Copyright (C) 2004-2017 Carsten Gnoerlich.
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* Copyright (C) 2019 The dvdisaster development team.
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*
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* Email: support@dvdisaster.org
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*
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* This file is part of dvdisaster.
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*
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* dvdisaster 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 3 of the License, or
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* (at your option) any later version.
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*
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* dvdisaster 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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*
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* You should have received a copy of the GNU General Public License
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* along with dvdisaster. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "dvdisaster.h"
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#if defined(SYS_LINUX)
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int ProbeCacheLineSize()
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{ int cl_size = 0;
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cl_size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE);
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if(!cl_size)
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cl_size = sysconf(_SC_LEVEL2_CACHE_LINESIZE);
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if(cl_size < 16)
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cl_size = 64;
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return cl_size;
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}
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#elif defined(SYS_FREEBSD) || defined(SYS_KFREEBSD)
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#include <sys/param.h>
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int ProbeCacheLineSize()
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{ int cl_size = CACHE_LINE_SIZE;
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/* Doing this at compile time may backfire,
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but let's just hope for the best. */
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if(cl_size < 16)
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cl_size = 64;
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return cl_size;
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}
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#elif defined(SYS_NETBSD)
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#include <sys/param.h>
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int ProbeCacheLineSize()
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{ int cl_size = CACHE_LINE_SIZE;
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/* Doing this at compile time may backfire,
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but let's just hope for the best. */
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if(cl_size < 16)
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cl_size = 64;
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return cl_size;
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}
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#else /* SYS_UNKNOWN and others. */
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int ProbeCacheLineSize()
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{
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return 64;
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}
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#endif
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/* TODO MINGW: https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-cache_descriptor */
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