forked from enlightenment/efl
parent
f61f070efc
commit
54bf7e1c01
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@ -24,6 +24,87 @@
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#include "eina_accessor.h"
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#include <stddef.h>
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/**
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* @addtogroup Eina_Inline_List_Group Inline List
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*
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* @brief These functions provide inline list management.
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*
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* Inline lists mean its nodes pointers are part of same memory as
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* data. This has the benefit of fragmenting memory less and avoiding
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* @c node->data indirection, but has the drawback of elements only
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* being able to be part of one single inlist at same time. But it is
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* possible to have inlist nodes to be part of regular lists created
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* with eina_list_append() or eina_list_prepend().
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*
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* Inline lists have their purposes, but if you don't know what those purposes are, go with
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* regular lists instead.
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*
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* Tip: When using inlists in more than one place (that is, passing them around
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* functions or keeping a pointer to them in a structure) it's more correct
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* to keep a pointer to the first container, and not a pointer to the first
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* inlist item (mostly they are the same, but that's not always correct).
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* This lets the compiler to do type checking and let the programmer know
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* exactly what type this list is.
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*
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* @code
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* #include <Eina.h>
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* #include <stdio.h>
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*
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* int
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* main(void)
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* {
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* struct my_struct {
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* EINA_INLIST;
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* int a, b;
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* } *d, *cur;
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* Eina_Inlist *list, *itr;
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*
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* eina_init();
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*
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* d = malloc(sizeof(*d));
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* d->a = 1;
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* d->b = 10;
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* list = eina_inlist_append(NULL, EINA_INLIST_GET(d));
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*
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* d = malloc(sizeof(*d));
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* d->a = 2;
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* d->b = 20;
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* list = eina_inlist_append(list, EINA_INLIST_GET(d));
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*
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* d = malloc(sizeof(*d));
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* d->a = 3;
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* d->b = 30;
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* list = eina_inlist_prepend(list, EINA_INLIST_GET(d));
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*
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* printf("list=%p\n", list);
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* EINA_INLIST_FOREACH(list, cur)
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* printf("\ta=%d, b=%d\n", cur->a, cur->b);
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*
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* list = eina_inlist_remove(list, EINA_INLIST_GET(d));
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* free(d);
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* printf("list=%p\n", list);
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* for (itr = list; itr != NULL; itr = itr->next)
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* {
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* cur = EINA_INLIST_CONTAINER_GET(itr, struct my_struct);
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* printf("\ta=%d, b=%d\n", cur->a, cur->b);
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* }
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*
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* while (list)
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* {
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* Eina_Inlist *aux = list;
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* list = eina_inlist_remove(list, list);
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* free(aux);
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* }
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*
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* eina_shutdown();
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*
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* return 0;
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* }
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* @endcode
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*
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* @{
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*/
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/**
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* @addtogroup Eina_Data_Types_Group Data Types
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*
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@ -67,27 +148,217 @@ struct _Eina_Inlist
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type) ((type *)((char *)ptr - \
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offsetof(type, __in_list)))
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/**
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* Add a new node to end of a list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a new_l is considered to be in no list. If it was in another
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* list before, eina_inlist_remove() it before adding. No
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* check of @a new_l prev and next pointers is done, so it's safe
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* to have them uninitialized.
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*
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* @param list existing list head or NULL to create a new list.
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* @param new_l new list node, must not be NULL.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *eina_inlist_append(Eina_Inlist *in_list,
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Eina_Inlist *in_item) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
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/**
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* Add a new node to beginning of list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a new_l is considered to be in no list. If it was in another
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* list before, eina_inlist_remove() it before adding. No
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* check of @a new_l prev and next pointers is done, so it's safe
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* to have them uninitialized.
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*
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* @param list existing list head or NULL to create a new list.
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* @param new_l new list node, must not be NULL.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *eina_inlist_prepend(Eina_Inlist *in_list,
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Eina_Inlist *in_item) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
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/**
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* Add a new node after the given relative item in list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a new_l is considered to be in no list. If it was in another
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* list before, eina_inlist_remove() it before adding. No
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* check of @a new_l prev and next pointers is done, so it's safe
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* to have them uninitialized.
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*
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* @note @a relative is considered to be inside @a list, no checks are
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* done to confirm that and giving nodes from different lists
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* will lead to problems. Giving NULL @a relative is the same as
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* eina_list_append().
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*
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* @param list existing list head or NULL to create a new list.
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* @param new_l new list node, must not be NULL.
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* @param relative reference node, @a new_l will be added after it.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *eina_inlist_append_relative(Eina_Inlist *in_list,
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Eina_Inlist *in_item,
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Eina_Inlist *in_relative) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
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/**
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* Add a new node before the given relative item in list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a new_l is considered to be in no list. If it was in another
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* list before, eina_inlist_remove() it before adding. No
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* check of @a new_l prev and next pointers is done, so it's safe
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* to have them uninitialized.
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*
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* @note @a relative is considered to be inside @a list, no checks are
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* done to confirm that and giving nodes from different lists
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* will lead to problems. Giving NULL @a relative is the same as
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* eina_list_prepend().
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*
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* @param list existing list head or NULL to create a new list.
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* @param new_l new list node, must not be NULL.
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* @param relative reference node, @a new_l will be added before it.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *eina_inlist_prepend_relative(Eina_Inlist *in_list,
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Eina_Inlist *in_item,
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Eina_Inlist *in_relative) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
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/**
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* Remove node from list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a item is considered to be inside @a list, no checks are
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* done to confirm that and giving nodes from different lists
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* will lead to problems, especially if @a item is the head since
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* it will be different from @a list and the wrong new head will
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* be returned.
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*
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* @param list existing list head, must not be NULL.
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* @param item existing list node, must not be NULL.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *eina_inlist_remove(Eina_Inlist *in_list,
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Eina_Inlist *in_item) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
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/**
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* Find given node in list, returns itself if found, NULL if not.
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*
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* @warning this is an expensive call and has O(n) cost, possibly
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* walking the whole list.
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*
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* @param list existing list to search @a item in, must not be NULL.
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* @param item what to search for, must not be NULL.
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*
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* @return @a item if found, NULL if not.
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*/
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EAPI Eina_Inlist *eina_inlist_find(Eina_Inlist *in_list,
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Eina_Inlist *in_item) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
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/**
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* Move existing node to beginning of list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a item is considered to be inside @a list. No checks are
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* done to confirm this, and giving nodes from different lists
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* will lead to problems.
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*
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* @param list existing list head or NULL to create a new list.
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* @param item list node to move to beginning (head), must not be NULL.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *eina_inlist_promote(Eina_Inlist *list,
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Eina_Inlist *item) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
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/**
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* Move existing node to end of list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a item is considered to be inside @a list. No checks are
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* done to confirm this, and giving nodes from different lists
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* will lead to problems.
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*
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* @param list existing list head or NULL to create a new list.
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* @param item list node to move to end (tail), must not be NULL.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *eina_inlist_demote(Eina_Inlist *list,
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Eina_Inlist *item) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
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/**
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* @brief Get the count of the number of items in a list.
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*
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* @param list The list whose count to return.
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* @return The number of members in the list.
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*
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* This function returns how many members @p list contains. If the
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* list is @c NULL, 0 is returned.
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*
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* @warning This is an order-N operation and so the time will depend
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* on the number of elements on the list, so, it might become
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* slow for big lists!
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*/
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EAPI unsigned int eina_inlist_count(const Eina_Inlist *list) EINA_WARN_UNUSED_RESULT;
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/**
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* @brief Returns a new iterator associated to @a list.
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*
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* @param list The list.
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* @return A new iterator.
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*
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* This function returns a newly allocated iterator associated to @p
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* list. If @p list is @c NULL or the count member of @p list is less
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* or equal than 0, this function still returns a valid iterator that
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* will always return false on eina_iterator_next(), thus keeping API
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* sane.
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*
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* If the memory can not be allocated, NULL is returned and
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* #EINA_ERROR_OUT_OF_MEMORY is set. Otherwise, a valid iterator is
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* returned.
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*
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* @warning if the list structure changes then the iterator becomes
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* invalid, and if you add or remove nodes iterator
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* behavior is undefined, and your program may crash!
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*/
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EAPI Eina_Iterator *eina_inlist_iterator_new(const Eina_Inlist *in_list) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
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/**
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* @brief Returns a new accessor associated to a list.
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*
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* @param list The list.
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* @return A new accessor.
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*
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* This function returns a newly allocated accessor associated to
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* @p list. If @p list is @c NULL or the count member of @p list is
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* less or equal than 0, this function returns NULL. If the memory can
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* not be allocated, NULL is returned and #EINA_ERROR_OUT_OF_MEMORY is
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* set. Otherwise, a valid accessor is returned.
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*/
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EAPI Eina_Accessor *eina_inlist_accessor_new(const Eina_Inlist *in_list) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
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/* This two macros are helpers for the _FOREACH ones, don't use them */
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@ -118,4 +389,8 @@ EAPI Eina_Accessor *eina_inlist_accessor_new(const Eina_Inlist *in_list) EINA_MA
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* @}
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*/
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/**
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* @}
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*/
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#endif /*EINA_INLIST_H_*/
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@ -154,103 +154,6 @@ eina_inlist_accessor_free(Eina_Accessor_Inlist *it) {
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* API *
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*============================================================================*/
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/**
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* @addtogroup Eina_Inline_List_Group Inline List
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*
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* @brief These functions provide inline list management.
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*
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* Inline lists mean its nodes pointers are part of same memory as
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* data. This has the benefit of fragmenting memory less and avoiding
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* @c node->data indirection, but has the drawback of elements only
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* being able to be part of one single inlist at same time. But it is
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* possible to have inlist nodes to be part of regular lists created
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* with eina_list_append() or eina_list_prepend().
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*
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* Inline lists have their purposes, but if you don't know what those purposes are, go with
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* regular lists instead.
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*
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* Tip: When using inlists in more than one place (that is, passing them around
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* functions or keeping a pointer to them in a structure) it's more correct
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* to keep a pointer to the first container, and not a pointer to the first
|
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* inlist item (mostly they are the same, but that's not always correct).
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* This lets the compiler to do type checking and let the programmer know
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* exactly what type this list is.
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*
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* @code
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* #include <Eina.h>
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* #include <stdio.h>
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*
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* int
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* main(void)
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* {
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* struct my_struct {
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* EINA_INLIST;
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* int a, b;
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* } *d, *cur;
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* Eina_Inlist *list, *itr;
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*
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* eina_init();
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*
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* d = malloc(sizeof(*d));
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* d->a = 1;
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* d->b = 10;
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* list = eina_inlist_append(NULL, EINA_INLIST_GET(d));
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*
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* d = malloc(sizeof(*d));
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* d->a = 2;
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* d->b = 20;
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* list = eina_inlist_append(list, EINA_INLIST_GET(d));
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*
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* d = malloc(sizeof(*d));
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* d->a = 3;
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* d->b = 30;
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* list = eina_inlist_prepend(list, EINA_INLIST_GET(d));
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*
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* printf("list=%p\n", list);
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* EINA_INLIST_FOREACH(list, cur)
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* printf("\ta=%d, b=%d\n", cur->a, cur->b);
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*
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* list = eina_inlist_remove(list, EINA_INLIST_GET(d));
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* free(d);
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* printf("list=%p\n", list);
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* for (itr = list; itr != NULL; itr = itr->next)
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* {
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* cur = EINA_INLIST_CONTAINER_GET(itr, struct my_struct);
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* printf("\ta=%d, b=%d\n", cur->a, cur->b);
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* }
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*
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* while (list)
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* {
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* Eina_Inlist *aux = list;
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* list = eina_inlist_remove(list, list);
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* free(aux);
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* }
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*
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* eina_shutdown();
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*
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* return 0;
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* }
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* @endcode
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*
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* @{
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*/
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/**
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* Add a new node to end of a list.
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*
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a new_l is considered to be in no list. If it was in another
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* list before, eina_inlist_remove() it before adding. No
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* check of @a new_l prev and next pointers is done, so it's safe
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* to have them uninitialized.
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*
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* @param list existing list head or NULL to create a new list.
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* @param new_l new list node, must not be NULL.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *
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eina_inlist_append(Eina_Inlist *list, Eina_Inlist *new_l)
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{
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|
@ -278,22 +181,6 @@ eina_inlist_append(Eina_Inlist *list, Eina_Inlist *new_l)
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return list;
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}
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/**
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* Add a new node to beginning of list.
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*
|
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* @note this code is meant to be fast: appends are O(1) and do not
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* walk @a list.
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*
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* @note @a new_l is considered to be in no list. If it was in another
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* list before, eina_inlist_remove() it before adding. No
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* check of @a new_l prev and next pointers is done, so it's safe
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* to have them uninitialized.
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*
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* @param list existing list head or NULL to create a new list.
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* @param new_l new list node, must not be NULL.
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*
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* @return the new list head. Use it and not @a list anymore.
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*/
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EAPI Eina_Inlist *
|
||||
eina_inlist_prepend(Eina_Inlist *list, Eina_Inlist *new_l)
|
||||
{
|
||||
|
@ -314,28 +201,6 @@ eina_inlist_prepend(Eina_Inlist *list, Eina_Inlist *new_l)
|
|||
return new_l;
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a new node after the given relative item in list.
|
||||
*
|
||||
* @note this code is meant to be fast: appends are O(1) and do not
|
||||
* walk @a list.
|
||||
*
|
||||
* @note @a new_l is considered to be in no list. If it was in another
|
||||
* list before, eina_inlist_remove() it before adding. No
|
||||
* check of @a new_l prev and next pointers is done, so it's safe
|
||||
* to have them uninitialized.
|
||||
*
|
||||
* @note @a relative is considered to be inside @a list, no checks are
|
||||
* done to confirm that and giving nodes from different lists
|
||||
* will lead to problems. Giving NULL @a relative is the same as
|
||||
* eina_list_append().
|
||||
*
|
||||
* @param list existing list head or NULL to create a new list.
|
||||
* @param new_l new list node, must not be NULL.
|
||||
* @param relative reference node, @a new_l will be added after it.
|
||||
*
|
||||
* @return the new list head. Use it and not @a list anymore.
|
||||
*/
|
||||
EAPI Eina_Inlist *
|
||||
eina_inlist_append_relative(Eina_Inlist *list,
|
||||
Eina_Inlist *new_l,
|
||||
|
@ -364,28 +229,6 @@ eina_inlist_append_relative(Eina_Inlist *list,
|
|||
return eina_inlist_append(list, new_l);
|
||||
}
|
||||
|
||||
/**
|
||||
* Add a new node before the given relative item in list.
|
||||
*
|
||||
* @note this code is meant to be fast: appends are O(1) and do not
|
||||
* walk @a list.
|
||||
*
|
||||
* @note @a new_l is considered to be in no list. If it was in another
|
||||
* list before, eina_inlist_remove() it before adding. No
|
||||
* check of @a new_l prev and next pointers is done, so it's safe
|
||||
* to have them uninitialized.
|
||||
*
|
||||
* @note @a relative is considered to be inside @a list, no checks are
|
||||
* done to confirm that and giving nodes from different lists
|
||||
* will lead to problems. Giving NULL @a relative is the same as
|
||||
* eina_list_prepend().
|
||||
*
|
||||
* @param list existing list head or NULL to create a new list.
|
||||
* @param new_l new list node, must not be NULL.
|
||||
* @param relative reference node, @a new_l will be added before it.
|
||||
*
|
||||
* @return the new list head. Use it and not @a list anymore.
|
||||
*/
|
||||
EAPI Eina_Inlist *
|
||||
eina_inlist_prepend_relative(Eina_Inlist *list,
|
||||
Eina_Inlist *new_l,
|
||||
|
@ -419,23 +262,6 @@ eina_inlist_prepend_relative(Eina_Inlist *list,
|
|||
return eina_inlist_prepend(list, new_l);
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove node from list.
|
||||
*
|
||||
* @note this code is meant to be fast: appends are O(1) and do not
|
||||
* walk @a list.
|
||||
*
|
||||
* @note @a item is considered to be inside @a list, no checks are
|
||||
* done to confirm that and giving nodes from different lists
|
||||
* will lead to problems, especially if @a item is the head since
|
||||
* it will be different from @a list and the wrong new head will
|
||||
* be returned.
|
||||
*
|
||||
* @param list existing list head, must not be NULL.
|
||||
* @param item existing list node, must not be NULL.
|
||||
*
|
||||
* @return the new list head. Use it and not @a list anymore.
|
||||
*/
|
||||
EAPI Eina_Inlist *
|
||||
eina_inlist_remove(Eina_Inlist *list, Eina_Inlist *item)
|
||||
{
|
||||
|
@ -474,21 +300,6 @@ eina_inlist_remove(Eina_Inlist *list, Eina_Inlist *item)
|
|||
return return_l;
|
||||
}
|
||||
|
||||
/**
|
||||
* Move existing node to beginning of list.
|
||||
*
|
||||
* @note this code is meant to be fast: appends are O(1) and do not
|
||||
* walk @a list.
|
||||
*
|
||||
* @note @a item is considered to be inside @a list. No checks are
|
||||
* done to confirm this, and giving nodes from different lists
|
||||
* will lead to problems.
|
||||
*
|
||||
* @param list existing list head or NULL to create a new list.
|
||||
* @param item list node to move to beginning (head), must not be NULL.
|
||||
*
|
||||
* @return the new list head. Use it and not @a list anymore.
|
||||
*/
|
||||
EAPI Eina_Inlist *
|
||||
eina_inlist_promote(Eina_Inlist *list, Eina_Inlist *item)
|
||||
{
|
||||
|
@ -516,21 +327,6 @@ eina_inlist_promote(Eina_Inlist *list, Eina_Inlist *item)
|
|||
return item;
|
||||
}
|
||||
|
||||
/**
|
||||
* Move existing node to end of list.
|
||||
*
|
||||
* @note this code is meant to be fast: appends are O(1) and do not
|
||||
* walk @a list.
|
||||
*
|
||||
* @note @a item is considered to be inside @a list. No checks are
|
||||
* done to confirm this, and giving nodes from different lists
|
||||
* will lead to problems.
|
||||
*
|
||||
* @param list existing list head or NULL to create a new list.
|
||||
* @param item list node to move to end (tail), must not be NULL.
|
||||
*
|
||||
* @return the new list head. Use it and not @a list anymore.
|
||||
*/
|
||||
EAPI Eina_Inlist *
|
||||
eina_inlist_demote(Eina_Inlist *list, Eina_Inlist *item)
|
||||
{
|
||||
|
@ -565,17 +361,6 @@ eina_inlist_demote(Eina_Inlist *list, Eina_Inlist *item)
|
|||
return l;
|
||||
}
|
||||
|
||||
/**
|
||||
* Find given node in list, returns itself if found, NULL if not.
|
||||
*
|
||||
* @warning this is an expensive call and has O(n) cost, possibly
|
||||
* walking the whole list.
|
||||
*
|
||||
* @param list existing list to search @a item in, must not be NULL.
|
||||
* @param item what to search for, must not be NULL.
|
||||
*
|
||||
* @return @a item if found, NULL if not.
|
||||
*/
|
||||
EAPI Eina_Inlist *
|
||||
eina_inlist_find(Eina_Inlist *list, Eina_Inlist *item)
|
||||
{
|
||||
|
@ -588,19 +373,6 @@ eina_inlist_find(Eina_Inlist *list, Eina_Inlist *item)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Get the count of the number of items in a list.
|
||||
*
|
||||
* @param list The list whose count to return.
|
||||
* @return The number of members in the list.
|
||||
*
|
||||
* This function returns how many members @p list contains. If the
|
||||
* list is @c NULL, 0 is returned.
|
||||
*
|
||||
* @warning This is an order-N operation and so the time will depend
|
||||
* on the number of elements on the list, so, it might become
|
||||
* slow for big lists!
|
||||
*/
|
||||
EAPI unsigned int
|
||||
eina_inlist_count(const Eina_Inlist *list)
|
||||
{
|
||||
|
@ -613,26 +385,6 @@ eina_inlist_count(const Eina_Inlist *list)
|
|||
return i;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Returns a new iterator associated to @a list.
|
||||
*
|
||||
* @param list The list.
|
||||
* @return A new iterator.
|
||||
*
|
||||
* This function returns a newly allocated iterator associated to @p
|
||||
* list. If @p list is @c NULL or the count member of @p list is less
|
||||
* or equal than 0, this function still returns a valid iterator that
|
||||
* will always return false on eina_iterator_next(), thus keeping API
|
||||
* sane.
|
||||
*
|
||||
* If the memory can not be allocated, NULL is returned and
|
||||
* #EINA_ERROR_OUT_OF_MEMORY is set. Otherwise, a valid iterator is
|
||||
* returned.
|
||||
*
|
||||
* @warning if the list structure changes then the iterator becomes
|
||||
* invalid, and if you add or remove nodes iterator
|
||||
* behavior is undefined, and your program may crash!
|
||||
*/
|
||||
EAPI Eina_Iterator *
|
||||
eina_inlist_iterator_new(const Eina_Inlist *list)
|
||||
{
|
||||
|
@ -660,18 +412,6 @@ eina_inlist_iterator_new(const Eina_Inlist *list)
|
|||
return &it->iterator;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Returns a new accessor associated to a list.
|
||||
*
|
||||
* @param list The list.
|
||||
* @return A new accessor.
|
||||
*
|
||||
* This function returns a newly allocated accessor associated to
|
||||
* @p list. If @p list is @c NULL or the count member of @p list is
|
||||
* less or equal than 0, this function returns NULL. If the memory can
|
||||
* not be allocated, NULL is returned and #EINA_ERROR_OUT_OF_MEMORY is
|
||||
* set. Otherwise, a valid accessor is returned.
|
||||
*/
|
||||
EAPI Eina_Accessor *
|
||||
eina_inlist_accessor_new(const Eina_Inlist *list)
|
||||
{
|
||||
|
@ -699,7 +439,3 @@ eina_inlist_accessor_new(const Eina_Inlist *list)
|
|||
|
||||
return &ac->accessor;
|
||||
}
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
|
Loading…
Reference in New Issue