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fix HOSTTYPE setting even if env var is set. changes to free to not unmap first chunk and add env setting NO_UNMAP

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tomoron
2025-03-20 17:03:35 +01:00
parent 13c3e9a77b
commit 016dcba92a
4 changed files with 30 additions and 11 deletions
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4
srcs/env_debug.c
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@ -6,7 +6,7 @@
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/12/06 19:16:40 by tomoron #+# #+# */
/* Updated: 2025/02/14 17:24:10 by tomoron ### ########.fr */
/* Updated: 2025/03/20 16:58:18 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -21,6 +21,8 @@ t_settings *get_settings(void)
{
if (getenv("MALLOC_SHOW_LEAKS"))
settings.show_leaks = 1;
if (getenv("MALLOC_NO_UNMAP"))
settings.no_unmap = 1;
str = getenv("MALLOC_DEBUG_LEVEL");
if (!str || !ft_strcmp(str, "NONE"))
settings.debug_level = 0;

26
srcs/free.c
View File

@ -6,7 +6,7 @@
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/11/30 18:46:07 by tomoron #+# #+# */
/* Updated: 2025/02/14 17:20:17 by tomoron ### ########.fr */
/* Updated: 2025/03/20 17:00:04 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -61,6 +61,24 @@ int get_prev_alloc(t_alloc **alloc, t_alloc **res, t_alloc *cur, char *fnc)
return (0);
}
static void free_chunk(size_t size, t_mem_chunk *chunk, t_mem_chunk **main_chunk)
{
t_mem_chunk *prev;
prev = *main_chunk;
if(*main_chunk == chunk)
prev = 0;
while(prev && prev->next != chunk)
prev = prev->next;
if (!prev && !chunk->next)
return;
if(prev)
prev->next = chunk->next;
else
*main_chunk = chunk->next;
munmap(chunk, size);
}
static int free_prealloc(t_alloc *alloc, t_mem_chunk **main_chunk, \
int is_small)
{
@ -79,15 +97,13 @@ static int free_prealloc(t_alloc *alloc, t_mem_chunk **main_chunk, \
chunk->first = alloc->next;
else if (prev)
prev->next = alloc->next;
if (!chunk->first)
if (!chunk->first && !get_settings()->no_unmap)
{
if (*main_chunk == chunk)
*main_chunk = chunk->next;
if (is_small)
size = SMALL_CHUNK_SIZE;
else
size = TINY_CHUNK_SIZE;
munmap(chunk, size);
free_chunk(size, chunk, main_chunk);
}
return (1);
}

3
srcs/includes/malloc.h
View File

@ -6,7 +6,7 @@
/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/11/26 16:38:01 by tomoron #+# #+# */
/* Updated: 2025/02/15 15:00:21 by tomoron ### ########.fr */
/* Updated: 2025/03/20 16:58:10 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -57,6 +57,7 @@ typedef struct t_settings
{
uint8_t debug_level:2;
uint8_t show_leaks:1;
uint8_t no_unmap:1;
uint8_t initialized:1;
} t_settings; //size 1