More review changes

Co-authored-by: Copilot <copilot@github.com>
2026-05-02 18:42:45 +02:00
parent ea50449f4b
commit cc9ff5bae9
10 changed files with 108 additions and 23 deletions
@@ -109,8 +109,16 @@ void FontCacheManager::PrewarmScope::endScanAndPrewarm() {

  manager_->prewarmCache(manager_->scanFontId_, manager_->scanText_.c_str(), styleMask);

-  // Keep reserved capacity to avoid repeated alloc/free churn between pages.
+  constexpr size_t BASE_SCAN_TEXT_CAP = 2048;
+  constexpr size_t MAX_SCAN_TEXT_CAP = 16384;
+
+  // Keep reserved capacity for typical pages, but trim pathological outliers.
  manager_->scanText_.clear();
+  if (manager_->scanText_.capacity() > MAX_SCAN_TEXT_CAP) {
+    std::string trimmed;
+    trimmed.reserve(BASE_SCAN_TEXT_CAP);
+    manager_->scanText_.swap(trimmed);
+  }
 }

 FontCacheManager::PrewarmScope::~PrewarmScope() {