RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 05:27:46 +00:00
Code Issues Activity Actions

LibJS: Cache valid indices in IndexedPropertyIterator

Browse source 
Refetching the list of indices every time we increment the iterator was
showing up hot & heavy in a profile of Discord.
This commit is contained in:
Andreas Kling 2022-02-05 17:59:14 +01:00
parent 483dce9750
commit 0d60cf211d
2 changed files with 5 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

7
Userland/Libraries/LibJS/Runtime/IndexedProperties.cpp
View file

@ -177,8 +177,10 @@ IndexedPropertyIterator::IndexedPropertyIterator(const IndexedProperties& indexe
, m_index(staring_index)
, m_skip_empty(skip_empty)
{
if (m_skip_empty)
if (m_skip_empty) {
m_cached_indices = m_indexed_properties.indices();
skip_empty_indices();
}
}
IndexedPropertyIterator& IndexedPropertyIterator::operator++()
@ -203,8 +205,7 @@ bool IndexedPropertyIterator::operator!=(const IndexedPropertyIterator& other) c
void IndexedPropertyIterator::skip_empty_indices()
{
auto indices = m_indexed_properties.indices();
for (auto i : indices) {
for (auto i : m_cached_indices) {
if (i < m_index)
continue;
m_index = i;