45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/*
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* Copyright (C) 2018 Tobias Heider <heidert@nm.ifi.lmu.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#include <assert.h>
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#include <string.h>
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#include "memarray.h"
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#define ENABLE_DEBUG 0
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#include "debug.h"
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void memarray_init(memarray_t *mem, void *data, size_t size, size_t num)
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{
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assert((mem != NULL) && (data != NULL) && (size >= sizeof(void *)) &&
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(num != 0));
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DEBUG("memarray: Initialize memarray of %u times %u Bytes at %p\n",
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(unsigned)num, (unsigned)size, data);
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mem->free_data = NULL;
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mem->size = size;
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mem->num = num;
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for (uint8_t *element = data;
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element < (uint8_t*)data + (num * size);
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element += size) {
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memarray_free(mem, element);
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}
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}
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size_t memarray_available(memarray_t *mem)
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{
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size_t num = 0;
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void **element = &mem->free_data;
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while (*element) {
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element = (void**)*element;
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num++;
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}
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return num;
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}
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