create get_chunk func to simplify
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c7e205c8e5
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5ebe1346ac
@ -61,3 +61,23 @@ int get_append_unused_chunk(void *root, size_t size, chunk_t *result, size_t new
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}
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}
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return 0;
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return 0;
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}
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}
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int get_chunk(void *data_start, chunk_t *result, int *category)
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{
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int i;
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void *chunk_pos;
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for (i = TINY; i <= LARGE; i++)
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{
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chunk_pos = raw_get_chunk_by_root(allocs_tree[i], data_start);
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if (chunk_pos == NULL)
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continue;
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break;
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}
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if (chunk_pos == NULL)
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return 1;
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chunk_read(chunk_pos, result);
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if (category)
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*category = i;
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return 0;
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}
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@ -6,3 +6,4 @@ void chunk_iter(chunk_t *root, void (*f)(chunk_t*));
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void chunk_merge(chunk_t *first, chunk_t *second);
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void chunk_merge(chunk_t *first, chunk_t *second);
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int get_append_unused_chunk(void *root, size_t size, chunk_t *result, size_t new_block_size);
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int get_append_unused_chunk(void *root, size_t size, chunk_t *result, size_t new_block_size);
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int chunk_split(chunk_t *chunk, size_t new_size);
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int chunk_split(chunk_t *chunk, size_t new_size);
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int get_chunk(void *data_start, chunk_t *result, int *category);
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22
src/free.c
22
src/free.c
@ -1,6 +1,10 @@
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#include "chunk.h"
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#include "chunk.h"
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#include "malloc.h"
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#include "malloc.h"
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#include "chunk_manager.h"
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#include "block.h"
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#include "raw_chunk_manager.h"
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#include <unistd.h>
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#include <stdbool.h>
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#include <stdbool.h>
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void free_tiny(chunk_t *chunk)
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void free_tiny(chunk_t *chunk)
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@ -47,28 +51,20 @@ static void (*free_funcs[3])(chunk_t*) = {free_tiny, free_small, free_large};
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void ft_free(void *ptr)
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void ft_free(void *ptr)
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{
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{
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void *raw_chunk;
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chunk_t chunk;
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chunk_t chunk;
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size_t i;
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int category;
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if (ptr == NULL)
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if (get_chunk(ptr, &chunk, &category))
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return;
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for (i = TINY; i <= LARGE; i++)
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{
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{
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raw_chunk = raw_get_chunk(allocs_tree[i], ptr);
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if (raw_chunk == NULL)
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continue;
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break;
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}
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#ifdef DEBUG
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#ifdef DEBUG
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if (raw_chunk == NULL)
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write(2, "chunk not found\n", 16);
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write(2, "chunk not found\n", 16);
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#endif
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#endif
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chunk_read(raw_chunk, &chunk);
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return;
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}
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#ifdef DEBUG
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#ifdef DEBUG
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if (chunk.is_used == false)
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if (chunk.is_used == false)
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write(2, "double free\n", 12);
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write(2, "double free\n", 12);
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#endif
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#endif
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// CALL THE RIGHT FREE FUNCTION DEPEND ON SIZE
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// CALL THE RIGHT FREE FUNCTION DEPEND ON SIZE
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free_funcs[i](&chunk);
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free_funcs[category](&chunk);
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}
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}
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@ -15,7 +15,7 @@ void *raw_get_last_chunk(void **root)
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return current;
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return current;
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}
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}
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void *raw_get_chunk(void **root, void *data_start)
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void *raw_get_chunk_by_root(void **root, void *data_start)
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{
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{
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void**current = root;
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void**current = root;
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@ -1,6 +1,6 @@
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#pragma once
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#pragma once
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void *raw_get_last_chunk(void **root);
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void *raw_get_last_chunk(void **root);
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void *raw_get_chunk(void **root, void *data_start);
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void *raw_get_chunk_by_root(void **root, void *data_start);
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int get_unused_chunk_raw(void *root, size_t size, chunk_t *result);
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int get_unused_chunk_raw(void *root, size_t size, chunk_t *result);
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int is_alone_on_block(const chunk_t *chunk);
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int is_alone_on_block(const chunk_t *chunk);
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20
test/main.c
20
test/main.c
@ -37,13 +37,13 @@ int main(int ac, char **av)
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ptr1 = ft_malloc(10000000);
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ptr1 = ft_malloc(10000000);
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ptr2 = ft_malloc(10000000);
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ptr2 = ft_malloc(10000000);
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ptr3 = ft_malloc(10000000);
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ptr3 = ft_malloc(10000000);
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[LARGE], ptr1) == NULL), "alloc first", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[LARGE], ptr1) == NULL), "alloc first", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[LARGE], ptr2) == NULL), "alloc second", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[LARGE], ptr2) == NULL), "alloc second", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[LARGE], ptr3) == NULL), "alloc third", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[LARGE], ptr3) == NULL), "alloc third", "");
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ft_free(ptr1);
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ft_free(ptr1);
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[LARGE], ptr2) == NULL), "free disorder1", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[LARGE], ptr2) == NULL), "free disorder1", "");
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ft_free(ptr3);
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ft_free(ptr3);
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[LARGE], ptr2) == NULL), "free disorder2", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[LARGE], ptr2) == NULL), "free disorder2", "");
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ft_free(ptr2);
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ft_free(ptr2);
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test(NULL, allocs_tree[LARGE], "free disorder3", "");
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test(NULL, allocs_tree[LARGE], "free disorder3", "");
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@ -57,13 +57,13 @@ int main(int ac, char **av)
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ptr1 = ft_malloc(4);
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ptr1 = ft_malloc(4);
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ptr2 = ft_malloc(4);
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ptr2 = ft_malloc(4);
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ptr3 = ft_malloc(4);
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ptr3 = ft_malloc(4);
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[TINY], ptr1) == NULL), "alloc first", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[TINY], ptr1) == NULL), "alloc first", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[TINY], ptr2) == NULL), "alloc second", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[TINY], ptr2) == NULL), "alloc second", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[TINY], ptr3) == NULL), "alloc third", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[TINY], ptr3) == NULL), "alloc third", "");
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ft_free(ptr1);
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ft_free(ptr1);
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[TINY], ptr2) == NULL), "free disorder1", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[TINY], ptr2) == NULL), "free disorder1", "");
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ft_free(ptr3);
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ft_free(ptr3);
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test(0, (const void*) (uintptr_t) (raw_get_chunk(allocs_tree[TINY], ptr2) == NULL), "free disorder2", "");
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test(0, (const void*) (uintptr_t) (raw_get_chunk_by_root(allocs_tree[TINY], ptr2) == NULL), "free disorder2", "");
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ft_free(ptr2);
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ft_free(ptr2);
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test(NULL, allocs_tree[TINY], "free disorder3", "");
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test(NULL, allocs_tree[TINY], "free disorder3", "");
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show_alloc_mem();
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show_alloc_mem();
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