54 lines
1.6 KiB
C
Executable File
54 lines
1.6 KiB
C
Executable File
/**
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* Copyright (C) 2011-2012 Juho Vähä-Herttua
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*/
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#ifndef MEMALIGN_H
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#define MEMALIGN_H
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#if defined(WIN32)
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#define SYSTEM_GET_PAGESIZE(ret) do {\
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SYSTEM_INFO si;\
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GetSystemInfo(&si);\
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ret = si.dwPageSize;\
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} while(0)
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#define SYSTEM_GET_TIME(ret) ret = timeGetTime()
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#define ALIGNED_MALLOC(memptr, alignment, size) do {\
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char *ptr = malloc(sizeof(void*) + (size) + (alignment)-1);\
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memptr = NULL;\
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if (ptr) {\
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size_t ptrval = (size_t)ptr + sizeof(void*) + (alignment)-1;\
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ptrval = ptrval / (alignment) * (alignment);\
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memptr = (void *)ptrval;\
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*(((void **)memptr)-1) = ptr;\
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}\
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} while(0)
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#define ALIGNED_FREE(memptr) free(*(((void **)memptr)-1))
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#else
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#define SYSTEM_GET_PAGESIZE(ret) ret = sysconf(_SC_PAGESIZE)
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#define SYSTEM_GET_TIME(ret) do {\
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struct timeval tv;\
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gettimeofday(&tv, NULL);\
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ret = (unsigned int)(tv.tv_sec*1000 + tv.tv_usec/1000);\
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} while(0)
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#define ALIGNED_MALLOC(memptr, alignment, size) if (posix_memalign((void **)&memptr, alignment, size)) memptr = NULL
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#define ALIGNED_FREE(memptr) free(memptr)
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#endif
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#endif
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