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comparison src/structs.h @ 13431:19f9b74a424e v8.0.1590

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patch 8.0.1590: padding in list type wastes memory commit https://github.com/vim/vim/commit/1a840240376f2858d489736f9eed6d2975225fdf Author: Bram Moolenaar <Bram@vim.org> Date: Thu Mar 8 21:46:43 2018 +0100 patch 8.0.1590: padding in list type wastes memory Problem: Padding in list type wastes memory. Solution: Reorder struct members to optimize padding. (Dominique Pelle, closes #2704)
author Christian Brabandt <cb@256bit.org>
date Thu, 08 Mar 2018 22:00:05 +0100
parents 6740c499de13
children fa198b71bab2
comparison
equal deleted inserted replaced
13430:6083ee98c089 13431:19f9b74a424e
1258 listwatch_T *lw_next; /* next watcher */ 1258 listwatch_T *lw_next; /* next watcher */
1259 }; 1259 };
1260 1260
1261 /* 1261 /*
1262 * Structure to hold info about a list. 1262 * Structure to hold info about a list.
1263 * Order of members is optimized to reduce padding.
1263 */ 1264 */
1264 struct listvar_S 1265 struct listvar_S
1265 { 1266 {
1266 listitem_T *lv_first; /* first item, NULL if none */ 1267 listitem_T *lv_first; /* first item, NULL if none */
1267 listitem_T *lv_last; /* last item, NULL if none */ 1268 listitem_T *lv_last; /* last item, NULL if none */
1269 listwatch_T *lv_watch; /* first watcher, NULL if none */
1270 listitem_T *lv_idx_item; /* when not NULL item at index "lv_idx" */
1271 list_T *lv_copylist; /* copied list used by deepcopy() */
1272 list_T *lv_used_next; /* next list in used lists list */
1273 list_T *lv_used_prev; /* previous list in used lists list */
1268 int lv_refcount; /* reference count */ 1274 int lv_refcount; /* reference count */
1269 int lv_len; /* number of items */ 1275 int lv_len; /* number of items */
1270 listwatch_T *lv_watch; /* first watcher, NULL if none */
1271 int lv_idx; /* cached index of an item */ 1276 int lv_idx; /* cached index of an item */
1272 listitem_T *lv_idx_item; /* when not NULL item at index "lv_idx" */
1273 int lv_copyID; /* ID used by deepcopy() */ 1277 int lv_copyID; /* ID used by deepcopy() */
1274 list_T *lv_copylist; /* copied list used by deepcopy() */
1275 char lv_lock; /* zero, VAR_LOCKED, VAR_FIXED */ 1278 char lv_lock; /* zero, VAR_LOCKED, VAR_FIXED */
1276 list_T *lv_used_next; /* next list in used lists list */
1277 list_T *lv_used_prev; /* previous list in used lists list */
1278 }; 1279 };
1279 1280
1280 /* 1281 /*
1281 * Static list with 10 items. Use init_static_list() to initialize. 1282 * Static list with 10 items. Use init_static_list() to initialize.
1282 */ 1283 */