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eina list - make use of prefetch for minor speedups 

i see a speedup of about 8% over a series of list walking and freeing
functions given this change. it's a small speedup but still not too
shabby just for some prefetches thrown in. ymmv depending on memory
subsystem, memory speed itself, cpu and architecture.

@optimize
This commit is contained in:
Carsten Haitzler 2016-10-01 17:51:25 +09:00
parent a06f5c1024
commit a2d507d3bf
1 changed files with 25 additions and 9 deletions
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34
src/lib/eina/eina_list.h
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@ -1411,12 +1411,16 @@ EAPI int eina_list_data_idx(const Eina_List *list, void *data)
* For destructive operations such as this, consider
* using EINA_LIST_FOREACH_SAFE().
*/
#define EINA_LIST_FOREACH(list, l, data) \
#define EINA_LIST_FOREACH(list, l, _data)\
for (l = list, \
data = eina_list_data_get(l); \
_data = eina_list_data_get(l), \
l ? (EINA_PREFETCH(l->next), EINA_PREFETCH(_data)) : EINA_PREFETCH(l); \
\
l; \
\
l = eina_list_next(l), \
data = eina_list_data_get(l))
_data = eina_list_data_get(l), \
l ? (EINA_PREFETCH(l->next), EINA_PREFETCH(_data)) : EINA_PREFETCH(l))
/**
* @def EINA_LIST_REVERSE_FOREACH
@ -1469,12 +1473,14 @@ EAPI int eina_list_data_idx(const Eina_List *list, void *data)
* For destructive operations such as this, consider
* using EINA_LIST_REVERSE_FOREACH_SAFE().
*/
#define EINA_LIST_REVERSE_FOREACH(list, l, data) \
#define EINA_LIST_REVERSE_FOREACH(list, l, _data)\
for (l = eina_list_last(list), \
data = eina_list_data_get(l); \
_data = eina_list_data_get(l), \
l ? (EINA_PREFETCH(l->prev), EINA_PREFETCH(_data)) : EINA_PREFETCH(l); \
l; \
l = eina_list_prev(l), \
data = eina_list_data_get(l))
_data = eina_list_data_get(l), \
l ? (EINA_PREFETCH(l->prev), EINA_PREFETCH(_data)) : EINA_PREFETCH(l))
/**
* @def EINA_LIST_FOREACH_SAFE
@ -1525,11 +1531,15 @@ EAPI int eina_list_data_idx(const Eina_List *list, void *data)
#define EINA_LIST_FOREACH_SAFE(list, l, l_next, data) \
for (l = list, \
l_next = eina_list_next(l), \
EINA_PREFETCH(l_next), \
data = eina_list_data_get(l); \
EINA_PREFETCH(data), \
l; \
l = l_next, \
l_next = eina_list_next(l), \
data = eina_list_data_get(l))
EINA_PREFETCH(l_next), \
data = eina_list_data_get(l), \
EINA_PREFETCH(data))
/**
* @def EINA_LIST_REVERSE_FOREACH_SAFE
@ -1582,11 +1592,15 @@ EAPI int eina_list_data_idx(const Eina_List *list, void *data)
#define EINA_LIST_REVERSE_FOREACH_SAFE(list, l, l_prev, data) \
for (l = eina_list_last(list), \
l_prev = eina_list_prev(l), \
EINA_PREFETCH(l_prev), \
data = eina_list_data_get(l); \
EINA_PREFETCH(data), \
l; \
l = l_prev, \
l_prev = eina_list_prev(l), \
data = eina_list_data_get(l))
EINA_PREFETCH(l_prev), \
data = eina_list_data_get(l), \
EINA_PREFETCH(data))
/**
* @def EINA_LIST_FREE
@ -1624,9 +1638,11 @@ EAPI int eina_list_data_idx(const Eina_List *list, void *data)
* @see eina_list_free()
*/
#define EINA_LIST_FREE(list, data) \
for (data = eina_list_data_get(list); \
for (data = eina_list_data_get(list), \
list ? EINA_PREFETCH((list)->next) : EINA_PREFETCH(list); \
list; \
list = eina_list_remove_list(list, list), \
list ? EINA_PREFETCH((list)->next) : EINA_PREFETCH(list), \
data = eina_list_data_get(list))
#include "eina_inline_list.x"