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SVN revision: 58427
This commit is contained in:
Carsten Haitzler 2011-04-07 12:21:50 +00:00
parent f61f070efc
commit 54bf7e1c01
2 changed files with 275 additions and 264 deletions
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275
legacy/eina/src/include/eina_inlist.h
View File

@ -24,6 +24,87 @@
#include "eina_accessor.h"
#include <stddef.h>
/**
* @addtogroup Eina_Inline_List_Group Inline List
*
* @brief These functions provide inline list management.
*
* Inline lists mean its nodes pointers are part of same memory as
* data. This has the benefit of fragmenting memory less and avoiding
* @c node->data indirection, but has the drawback of elements only
* being able to be part of one single inlist at same time. But it is
* possible to have inlist nodes to be part of regular lists created
* with eina_list_append() or eina_list_prepend().
*
* Inline lists have their purposes, but if you don't know what those purposes are, go with
* regular lists instead.
*
* Tip: When using inlists in more than one place (that is, passing them around
* functions or keeping a pointer to them in a structure) it's more correct
* to keep a pointer to the first container, and not a pointer to the first
* inlist item (mostly they are the same, but that's not always correct).
* This lets the compiler to do type checking and let the programmer know
* exactly what type this list is.
*
* @code
* #include <Eina.h>
* #include <stdio.h>
*
* int
* main(void)
* {
* struct my_struct {
* EINA_INLIST;
* int a, b;
* } *d, *cur;
* Eina_Inlist *list, *itr;
*
* eina_init();
*
* d = malloc(sizeof(*d));
* d->a = 1;
* d->b = 10;
* list = eina_inlist_append(NULL, EINA_INLIST_GET(d));
*
* d = malloc(sizeof(*d));
* d->a = 2;
* d->b = 20;
* list = eina_inlist_append(list, EINA_INLIST_GET(d));
*
* d = malloc(sizeof(*d));
* d->a = 3;
* d->b = 30;
* list = eina_inlist_prepend(list, EINA_INLIST_GET(d));
*
* printf("list=%p\n", list);
* EINA_INLIST_FOREACH(list, cur)
* printf("\ta=%d, b=%d\n", cur->a, cur->b);
*
* list = eina_inlist_remove(list, EINA_INLIST_GET(d));
* free(d);
* printf("list=%p\n", list);
* for (itr = list; itr != NULL; itr = itr->next)
* {
* cur = EINA_INLIST_CONTAINER_GET(itr, struct my_struct);
* printf("\ta=%d, b=%d\n", cur->a, cur->b);
* }
*
* while (list)
* {
* Eina_Inlist *aux = list;
* list = eina_inlist_remove(list, list);
* free(aux);
* }
*
* eina_shutdown();
*
* return 0;
* }
* @endcode
*
* @{
*/
/**
* @addtogroup Eina_Data_Types_Group Data Types
*
@ -67,27 +148,217 @@ struct _Eina_Inlist
type) ((type *)((char *)ptr - \
offsetof(type, __in_list)))
/**
* Add a new node to end of a 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.
*
* @param list existing list head or NULL to create a new list.
* @param new_l new list node, must not be NULL.
*
* @return the new list head. Use it and not @a list anymore.
*/
EAPI Eina_Inlist *eina_inlist_append(Eina_Inlist *in_list,
Eina_Inlist *in_item) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
/**
* Add a new 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 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.
*
* @param list existing list head or NULL to create a new list.
* @param new_l new list node, must not be NULL.
*
* @return the new list head. Use it and not @a list anymore.
*/
EAPI Eina_Inlist *eina_inlist_prepend(Eina_Inlist *in_list,
Eina_Inlist *in_item) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
/**
* 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 *in_list,
Eina_Inlist *in_item,
Eina_Inlist *in_relative) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
/**
* 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 *in_list,
Eina_Inlist *in_item,
Eina_Inlist *in_relative) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
/**
* 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 *in_list,
Eina_Inlist *in_item) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
/**
* 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 *in_list,
Eina_Inlist *in_item) EINA_ARG_NONNULL(2) EINA_WARN_UNUSED_RESULT;
/**
* 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) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
/**
* 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) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT;
/**
* @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) EINA_WARN_UNUSED_RESULT;
/**
* @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 *in_list) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
/**
* @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 *in_list) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
/* This two macros are helpers for the _FOREACH ones, don't use them */
@ -118,4 +389,8 @@ EAPI Eina_Accessor *eina_inlist_accessor_new(const Eina_Inlist *in_list) EINA_MA
* @}
*/
/**
* @}
*/
#endif /*EINA_INLIST_H_*/

264
legacy/eina/src/lib/eina_inlist.c
View File

@ -154,103 +154,6 @@ eina_inlist_accessor_free(Eina_Accessor_Inlist *it) {
* API *
*============================================================================*/
/**
* @addtogroup Eina_Inline_List_Group Inline List
*
* @brief These functions provide inline list management.
*
* Inline lists mean its nodes pointers are part of same memory as
* data. This has the benefit of fragmenting memory less and avoiding
* @c node->data indirection, but has the drawback of elements only
* being able to be part of one single inlist at same time. But it is
* possible to have inlist nodes to be part of regular lists created
* with eina_list_append() or eina_list_prepend().
*
* Inline lists have their purposes, but if you don't know what those purposes are, go with
* regular lists instead.
*
* Tip: When using inlists in more than one place (that is, passing them around
* functions or keeping a pointer to them in a structure) it's more correct
* to keep a pointer to the first container, and not a pointer to the first
* inlist item (mostly they are the same, but that's not always correct).
* This lets the compiler to do type checking and let the programmer know
* exactly what type this list is.
*
* @code
* #include <Eina.h>
* #include <stdio.h>
*
* int
* main(void)
* {
* struct my_struct {
* EINA_INLIST;
* int a, b;
* } *d, *cur;
* Eina_Inlist *list, *itr;
*
* eina_init();
*
* d = malloc(sizeof(*d));
* d->a = 1;
* d->b = 10;
* list = eina_inlist_append(NULL, EINA_INLIST_GET(d));
*
* d = malloc(sizeof(*d));
* d->a = 2;
* d->b = 20;
* list = eina_inlist_append(list, EINA_INLIST_GET(d));
*
* d = malloc(sizeof(*d));
* d->a = 3;
* d->b = 30;
* list = eina_inlist_prepend(list, EINA_INLIST_GET(d));
*
* printf("list=%p\n", list);
* EINA_INLIST_FOREACH(list, cur)
* printf("\ta=%d, b=%d\n", cur->a, cur->b);
*
* list = eina_inlist_remove(list, EINA_INLIST_GET(d));
* free(d);
* printf("list=%p\n", list);
* for (itr = list; itr != NULL; itr = itr->next)
* {
* cur = EINA_INLIST_CONTAINER_GET(itr, struct my_struct);
* printf("\ta=%d, b=%d\n", cur->a, cur->b);
* }
*
* while (list)
* {
* Eina_Inlist *aux = list;
* list = eina_inlist_remove(list, list);
* free(aux);
* }
*
* eina_shutdown();
*
* return 0;
* }
* @endcode
*
* @{
*/
/**
* Add a new node to end of a 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.
*
* @param list existing list head or NULL to create a new list.
* @param new_l new list node, must not be NULL.
*
* @return the new list head. Use it and not @a list anymore.
*/
EAPI Eina_Inlist *
eina_inlist_append(Eina_Inlist *list, Eina_Inlist *new_l)
{
@ -278,22 +181,6 @@ eina_inlist_append(Eina_Inlist *list, Eina_Inlist *new_l)
return list;
}
/**
* Add a new 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 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.
*
* @param list existing list head or NULL to create a new list.
* @param new_l new list node, must not be NULL.
*
* @return the new list head. Use it and not @a list anymore.
*/
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;
}
/**
* @}
*/