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malloc.c
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65 lines (57 loc) · 1.3 KB
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/*
** EPITECH PROJECT, 2021
** ${FOLDER_NAME}
** File description:
** malloc.c file
*/
#include <stdio.h>
#include "my_mem.h"
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
size_t inital_size(void *size)
{
static size_t ret = 0;
if (size)
ret = (size_t) size;
return ret;
}
size_t current_index(size_t *index)
{
static size_t ret = 0;
if (index)
ret = (size_t) index;
return ret;
}
size_t end_size(size_t *size)
{
static size_t ret = 0;
if (size)
ret = (size_t) size;
return ret;
}
memblock_t **my_blocks(void)
{
static memblock_t *val = NULL;
return &val;
}
void *malloc(size_t size)
{
pthread_mutex_lock(&lock);
size = ALIGN16(size);
static size_t init_size = 0;
if (init_size == 0)
init_size = inital_size(sbrk(0));
memblock_t *ret = find_mem(size);
if (ret) {
ret->_free = 'N';
pthread_mutex_unlock(&lock);
return ret->_ptr;
}
size_t index = current_index(NULL);
size_t expected_range = (init_size + index + size + sizeof(memblock_t));
while (expected_range > end_size(NULL))
fetch_mem();
void *ptr = init_memory(size, (void *) (init_size + index));
current_index((size_t *) (index + size + sizeof(memblock_t)));
pthread_mutex_unlock(&lock);
return ptr;
}