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Merge pull request #14354 from Snuffleupagus/improve-pageKidsCountCache-further

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Further improve caching in `Catalog.getPageDict`, for `disableAutoFetch` mode (PR 8207 follow-up)
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Tim van der Meij 2021-12-11 12:54:39 +01:00 committed by GitHub
commit 2b8a5dce70
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1 changed files with 7 additions and 6 deletions
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src/core/catalog.js
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@ -1117,13 +1117,14 @@ class Catalog {
xref.fetchAsync(currentNode).then(function (obj) { xref.fetchAsync(currentNode).then(function (obj) {
if (isDict(obj, "Page") || (isDict(obj) && !obj.has("Kids"))) { if (isDict(obj, "Page") || (isDict(obj) && !obj.has("Kids"))) {
// Cache the Page reference, since it can *greatly* improve
// performance by reducing redundant lookups in long documents
// where all nodes are found at *one* level of the tree.
if (currentNode && !pageKidsCountCache.has(currentNode)) {
pageKidsCountCache.put(currentNode, 1);
}
if (pageIndex === currentPageIndex) { if (pageIndex === currentPageIndex) {
// Cache the Page reference, since it can *greatly* improve
// performance by reducing redundant lookups in long documents
// where all nodes are found at *one* level of the tree.
if (currentNode && !pageKidsCountCache.has(currentNode)) {
pageKidsCountCache.put(currentNode, 1);
}
capability.resolve([obj, currentNode]); capability.resolve([obj, currentNode]);
} else { } else {
currentPageIndex++; currentPageIndex++;