82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* pages.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/07/10 16:51:10 by maiboyer #+# #+# */
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/* Updated: 2024/10/23 14:52:47 by maiboyer ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "aq/allocator.h"
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#include "aq/internal_vg_funcs.h"
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#include "aq/melloc_interal.h"
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#include "me/mem/mem.h"
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#include "me/types.h"
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#include <errno.h>
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void *malloc(t_usize size);
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void free(void *ptr);
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t_error alloc_page_list(t_page_list **out)
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{
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t_page_list *val;
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if (out == NULL)
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return (ERROR);
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val = malloc(sizeof(*val));
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if (val == NULL)
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return (ERROR);
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mem_set_zero(val, sizeof(*val));
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*out = val;
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vg_mem_no_access(val, sizeof(*val));
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vg_mempool_create_ext(val, MEMPOOL_FLAG_MALLOCLIKE);
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return (NO_ERROR);
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}
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t_error _alloc_new_page_inner(t_usize page_size, t_page_list *list)
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{
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t_chunk *chunk;
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if (list == NULL)
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return (ERROR);
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vg_mem_defined(list, sizeof(*list));
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list->pages[list->len].data = malloc(page_size);
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if (list->pages[list->len].data == NULL)
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return (ERROR);
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mem_set_zero(list->pages[list->len].data, page_size);
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list->pages[list->len].size = page_size;
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vg_mempool_alloc(list, list->pages[list->len].data, page_size);
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chunk = get_first_block(&list->pages[list->len]);
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chunk->used = false;
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chunk->size = page_size - sizeof(*chunk) * 2;
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vg_mem_no_access(chunk, sizeof(*chunk));
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list->len++;
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vg_mem_no_access(list, sizeof(*list));
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return (NO_ERROR);
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}
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t_error alloc_new_page(struct s_allocator_melloc *alloc, t_usize page_size)
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{
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t_page_list *list;
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t_page_list *list_bis;
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page_size = round_to_pow2(page_size, PAGE_POW_2);
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if (alloc->list == NULL && alloc_page_list(&alloc->list))
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return (ERROR);
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list = alloc->list;
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while (list)
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{
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vg_mem_defined(list, sizeof(*list));
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if (list->len != PAGE_LIST_MAX)
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break ;
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if (list->next == NULL && alloc_page_list(&list->next))
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return (vg_mem_no_access(list, sizeof(*list)), ERROR);
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list_bis = list;
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list = list->next;
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vg_mem_no_access(list_bis, sizeof(*list_bis));
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}
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return (_alloc_new_page_inner(page_size, list));
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}
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