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patch 9.0.0622: matchaddpos() can get slow when adding many matches

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Problem:    matchaddpos() can get slow when adding many matches.
Solution:   Update the next available match ID when manually picking an ID and
            remove check if the available ID can be used. (idea by Rick Howe)
This commit is contained in:
Bram Moolenaar
2022-09-29 13:50:08 +01:00
parent fc06cda837
commit 9f573a8df0
5 changed files with 26 additions and 27 deletions
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32
src/match.c
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@@ -50,19 +50,28 @@ match_add(
semsg(_(e_invalid_id_nr_must_be_greater_than_or_equal_to_one_1), id);
return -1;
}
if (id != -1)
if (id == -1)
{
cur = wp->w_match_head;
while (cur != NULL)
{
// use the next available match ID
id = wp->w_next_match_id++;
}
else
{
// check the given ID is not already in use
for (cur = wp->w_match_head; cur != NULL; cur = cur->mit_next)
if (cur->mit_id == id)
{
semsg(_(e_id_already_taken_nr), id);
return -1;
}
cur = cur->mit_next;
}
// Make sure the next match ID is always higher than the highest
// manually selected ID. Add some extra in case a few more IDs are
// added soon.
if (wp->w_next_match_id < id + 100)
wp->w_next_match_id = id + 100;
}
if ((hlg_id = syn_namen2id(grp, (int)STRLEN(grp))) == 0)
{
semsg(_(e_no_such_highlight_group_name_str), grp);
@@ -74,17 +83,6 @@ match_add(
return -1;
}
// Find available match ID.
while (id == -1)
{
cur = wp->w_match_head;
while (cur != NULL && cur->mit_id != wp->w_next_match_id)
cur = cur->mit_next;
if (cur == NULL)
id = wp->w_next_match_id;
wp->w_next_match_id++;
}
// Build new match.
m = ALLOC_CLEAR_ONE(matchitem_T);
if (m == NULL)