MD-Bench/common/allocate.c

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/*
* Copyright (C) 2022 NHR@FAU, University Erlangen-Nuremberg.
* All rights reserved. This file is part of MD-Bench.
* Use of this source code is governed by a LGPL-3.0
* license that can be found in the LICENSE file.
*/
#include <stdlib.h>
#include <stdio.h>
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#include <string.h>
#include <errno.h>
#include <util.h>
void *allocate(int alignment, size_t bytesize) {
void *ptr;
int errorCode;
errorCode = posix_memalign(&ptr, alignment, bytesize);
if(errorCode == EINVAL) {
fprintf(stderr, "Error: Alignment parameter is not a power of two\n");
exit(EXIT_FAILURE);
}
if(errorCode == ENOMEM) {
fprintf(stderr, "Error: Insufficient memory to fulfill the request\n");
exit(EXIT_FAILURE);
}
if(ptr == NULL) {
fprintf(stderr, "Error: posix_memalign failed!\n");
exit(EXIT_FAILURE);
}
return ptr;
}
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void *reallocate(void* ptr, int alignment, size_t new_bytesize, size_t old_bytesize) {
void *newarray = allocate(alignment, new_bytesize);
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if(ptr != NULL) {
memcpy(newarray, ptr, old_bytesize);
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free(ptr);
}
return newarray;
}