tor-browser

commit 09f09088e7267ce4fea0483e801503fdd0b8cf6f
parent ec0aa566fa19398f7157fd77da8258599c5d91fe
Author: agoloman <agoloman@mozilla.com>
Date:   Wed, 19 Nov 2025 17:51:18 +0200

Revert "Bug 2001105 - Remove unused content.maxtextrun pref r=dom-core,smaug" for causing build bustages @nsHTMLContentSink.cpp.

This reverts commit e4c0a7574228f2d4c7b06641f511fb01379e9093.

Diffstat:
M
dom/html/nsHTMLContentSink.cpp
 | 
16
+++++++++++++---

1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/dom/html/nsHTMLContentSink.cpp b/dom/html/nsHTMLContentSink.cpp
@@ -116,6 +116,9 @@ class HTMLContentSink : public nsContentSink, public nsIHTMLContentSink {
 
   RefPtr<nsHTMLDocument> mHTMLDocument;
 
+  // The maximum length of a text run
+  int32_t mMaxTextRun;
+
   RefPtr<nsGenericHTMLElement> mRoot;
   RefPtr<nsGenericHTMLElement> mBody;
   RefPtr<nsGenericHTMLElement> mHead;
@@ -525,9 +528,12 @@ nsresult NS_NewHTMLContentSink(nsIHTMLContentSink** aResult, Document* aDoc,
   return NS_OK;
 }
 
-HTMLContentSink::HTMLContentSink() mCurrentContext(nullptr),
-    mHeadContext(nullptr), mHaveSeenHead(false),
-    mNotifiedRootInsertion(false) {}
+HTMLContentSink::HTMLContentSink()
+    : mMaxTextRun(0),
+      mCurrentContext(nullptr),
+      mHeadContext(nullptr),
+      mHaveSeenHead(false),
+      mNotifiedRootInsertion(false) {}
 
 HTMLContentSink::~HTMLContentSink() {
   if (mNotificationTimer) {
@@ -582,6 +588,10 @@ nsresult HTMLContentSink::Init(Document* aDoc, nsIURI* aURI,
 
   NS_ASSERTION(mDocShell, "oops no docshell!");
 
+  // Changed from 8192 to greatly improve page loading performance on
+  // large pages.  See bugzilla bug 77540.
+  mMaxTextRun = Preferences::GetInt("content.maxtextrun", 8191);
+
   RefPtr<mozilla::dom::NodeInfo> nodeInfo;
   nodeInfo = mNodeInfoManager->GetNodeInfo(
       nsGkAtoms::html, nullptr, kNameSpaceID_XHTML, nsINode::ELEMENT_NODE);