Patch 8.0.1590
Problem: Padding in list type wastes memory.
Solution: Reorder struct members to optimize padding. (Dominique Pelle,
closes #2704)
Files: src/structs.h
*** ../vim-8.0.1589/src/structs.h 2018-03-04 20:14:08.256064288 +0100
--- src/structs.h 2018-03-08 21:46:16.602881941 +0100
***************
*** 1260,1280 ****
/*
* Structure to hold info about a list.
*/
struct listvar_S
{
listitem_T *lv_first; /* first item, NULL if none */
listitem_T *lv_last; /* last item, NULL if none */
- int lv_refcount; /* reference count */
- int lv_len; /* number of items */
listwatch_T *lv_watch; /* first watcher, NULL if none */
- int lv_idx; /* cached index of an item */
listitem_T *lv_idx_item; /* when not NULL item at index "lv_idx"
*/
- int lv_copyID; /* ID used by deepcopy() */
list_T *lv_copylist; /* copied list used by deepcopy() */
- char lv_lock; /* zero, VAR_LOCKED, VAR_FIXED */
list_T *lv_used_next; /* next list in used lists list */
list_T *lv_used_prev; /* previous list in used lists list */
};
/*
--- 1260,1281 ----
/*
* Structure to hold info about a list.
+ * Order of members is optimized to reduce padding.
*/
struct listvar_S
{
listitem_T *lv_first; /* first item, NULL if none */
listitem_T *lv_last; /* last item, NULL if none */
listwatch_T *lv_watch; /* first watcher, NULL if none */
listitem_T *lv_idx_item; /* when not NULL item at index "lv_idx"
*/
list_T *lv_copylist; /* copied list used by deepcopy() */
list_T *lv_used_next; /* next list in used lists list */
list_T *lv_used_prev; /* previous list in used lists list */
+ int lv_refcount; /* reference count */
+ int lv_len; /* number of items */
+ int lv_idx; /* cached index of an item */
+ int lv_copyID; /* ID used by deepcopy() */
+ char lv_lock; /* zero, VAR_LOCKED, VAR_FIXED */
};
/*
*** ../vim-8.0.1589/src/version.c 2018-03-07 23:02:29.594336432 +0100
--- src/version.c 2018-03-08 21:46:25.166824549 +0100
***************
*** 768,769 ****
--- 768,771 ----
{ /* Add new patch number below this line */
+ /**/
+ 1590,
/**/
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