115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* malloc_tests.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: gtertysh <gtertysh@student.unit.ua> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2019/05/06 22:35:37 by foton #+# #+# */
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/* Updated: 2019/05/08 19:47:45 by gtertysh ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <unistd.h>
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#include "t.h"
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#include "ft_malloc.h"
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#include "ft_malloc_internal.h"
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int inital_base_next_point_to_itself(void)
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{
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_IS(g_base.next == &g_base);
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_END("inital_base_next_point_to_itself");
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}
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int returns_not_null_pointer(void)
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{
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t_chunk *ptr;
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g_base.next = &g_base;
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ptr = malloc(10);
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_IS(ptr != NULL);
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ptr = ptr - 1;
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_IS(ptr->is_free == 0);
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_IS(ptr->size == 10 + sizeof(t_chunk));
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_IS(ptr->magic == MAGIC);
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_IS(ptr->next == NULL);
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_IS(ptr->prev != NULL);
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_IS(ptr->prev->size > TINY * NALLOC && ptr->prev->size < SMALL * NALLOC);
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// show_alloc_mem();
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_END("returns_not_null_pointer");
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}
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int free_concatenates_adjacent_blocks(void)
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{
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t_chunk *ptr;
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t_chunk *next_malloc;
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t_chunk *heap;
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g_base.next = &g_base;
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ptr = malloc(10);
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next_malloc = malloc(10);
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ptr -= 1;
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next_malloc -= 1;
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free(ptr + 1);
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_IS(ptr->is_free == 1);
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_IS(ptr->prev == next_malloc);
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_IS(next_malloc->is_free == 0);
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_IS(next_malloc->next == ptr);
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_IS(next_malloc->prev->prev == NULL);
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heap = next_malloc->prev;
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free(next_malloc + 1);
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_IS(heap->is_free == 1);
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_IS(heap->prev == NULL);
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_IS(heap->next == NULL);
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_END("free_concatenates_adjacent_blocks");
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}
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int malloc_creates_new_arena(void)
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{
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t_chunk *second_arena_chunk;
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int chunks_count;
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int i;
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int page;
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g_base.next = &g_base;
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page = getpagesize();
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// minimum 100 chunks aligned to page size
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chunks_count = (ARENA_SIZE(CHUNK_SIZE(TINY) * NALLOC) + page - 1)
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/ page * page / CHUNK_SIZE(TINY);
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i = 0;
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while (i < chunks_count)
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{
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second_arena_chunk = malloc(TINY);
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i++;
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}
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_IS(g_base.next->next == &g_base);
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_IS(g_base.next->type == TINY);
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second_arena_chunk = malloc(TINY);
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_IS(g_base.next->next != &g_base);
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_IS(g_base.next->type == TINY);
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_IS(g_base.next->heap->next == second_arena_chunk - 1);
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// show_alloc_mem();
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_END("malloc_creates_new_arena");
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}
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int realloc_return_same_pointer(void)
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{
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t_chunk *ptr;
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t_chunk *new_ptr;
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g_base.next = &g_base;
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ptr = malloc(20);
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new_ptr = realloc(ptr, 10);
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_IS(ptr == new_ptr);
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_END("realloc_return_same_pointer");
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}
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int main(void)
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{
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_SHOULD(inital_base_next_point_to_itself);
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_SHOULD(returns_not_null_pointer);
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_SHOULD(free_concatenates_adjacent_blocks);
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_SHOULD(malloc_creates_new_arena);
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_SHOULD(realloc_return_same_pointer);
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return (0);
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}
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