71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/*
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* =======================================================================================
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*
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* Author: Jan Eitzinger (je), jan.eitzinger@fau.de
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* Copyright (c) 2020 RRZE, University Erlangen-Nuremberg
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*
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* This file is part of MD-Bench.
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*
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* MD-Bench is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published
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* by 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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* MD-Bench is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public License along
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* with MD-Bench. If not, see <https://www.gnu.org/licenses/>.
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* =======================================================================================
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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void* allocate (int alignment, size_t bytesize)
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{
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int errorCode;
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void* ptr;
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errorCode = posix_memalign(&ptr, alignment, bytesize);
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if (errorCode) {
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if (errorCode == EINVAL) {
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fprintf(stderr,
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"Error: Alignment parameter is not a power of two\n");
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exit(EXIT_FAILURE);
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}
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if (errorCode == ENOMEM) {
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fprintf(stderr,
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"Error: Insufficient memory to fulfill the request\n");
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exit(EXIT_FAILURE);
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}
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}
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if (ptr == NULL) {
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fprintf(stderr, "Error: posix_memalign failed!\n");
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exit(EXIT_FAILURE);
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}
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return ptr;
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}
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void* reallocate (
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void* ptr,
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int alignment,
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size_t newBytesize,
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size_t oldBytesize)
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{
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void* newarray = allocate(alignment, newBytesize);
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if(ptr != NULL) {
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memcpy(newarray, ptr, oldBytesize);
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free(ptr);
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}
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return newarray;
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}
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