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add MALLOC_DEBUG_LEVEL environment variable support

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tomoron
2024-12-09 20:08:28 +01:00
parent 039d29f0d7
commit 9824c9d230
12 changed files with 205 additions and 19 deletions
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17
srcs/free.c
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@ -6,7 +6,7 @@
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/11/30 18:46:07 by tomoron #+# #+# */
/* Updated: 2024/12/05 17:01:32 by tomoron ### ########.fr */
/* Updated: 2024/12/09 19:16:14 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -50,6 +50,8 @@ int get_prev_alloc(t_alloc **alloc, t_alloc **res, t_alloc *cur, char *fnc)
if ((cur->next > *alloc || cur->next == 0) && cur <= *alloc && \
((t_ul)(*alloc) - (t_ul)cur) <= cur->size)
{
log_str("invalid pointer but adress is inside of an \
allocation", 2, 1, 1);
*alloc = cur;
*res = prev;
return (1);
@ -57,6 +59,7 @@ int get_prev_alloc(t_alloc **alloc, t_alloc **res, t_alloc *cur, char *fnc)
prev = cur;
cur = cur->next;
}
log_str("invalid pointer inside of a chunk", 2, 1, 1);
invalid_pointer(fnc);
return (0);
}
@ -71,6 +74,7 @@ static int free_prealloc(t_alloc *alloc, t_mem_chunk **main_chunk, \
chunk = get_alloc_chunk(alloc, *main_chunk, is_small);
if (!chunk)
return (0);
log_str("free pointer chunk found", 3 ,1 ,1);
if (!get_prev_alloc(&alloc, &prev, chunk->first, "free"))
return (1);
chunk->space_left -= alloc->size + sizeof(t_alloc);
@ -96,26 +100,33 @@ static void free_large(t_alloc *alloc)
t_alloc *prev;
if (!get_prev_alloc(&alloc, &prev, g_allocs.large, "free"))
{
log_str("unknown pointer given", 1, 1, 1);
return ;
}
if (alloc == g_allocs.large)
g_allocs.large = alloc->next;
else if (prev)
prev->next = alloc->next;
log_str("munmap called with size ", 3, 1, 0);
log_ul(alloc->size + sizeof(t_alloc), 3, 0, 1);
munmap(alloc, alloc->size + sizeof(t_alloc));
log_str("free sucessfull", 3, 1, 1);
}
void free(void *ptr)
{
t_alloc *alloc;
log_str("free function called", 3, 1, 1);
if (!ptr)
return ;
alloc = (t_alloc *)ptr - 1;
pthread_mutex_lock(&g_mallock);
if (free_prealloc(alloc, &g_allocs.tiny, 0))
pthread_mutex_unlock(&g_mallock);
log_str("free successful", 3, 1, 1);
else if (free_prealloc(alloc, &g_allocs.small, 1))
pthread_mutex_unlock(&g_mallock);
log_str("free successful", 3, 1, 1);
else
free_large(alloc);
pthread_mutex_unlock(&g_mallock);