perf: release CSS rule map after warm open (#2439)

Co-authored-by: Erica Jensen <erica@mailershaven.com>
2026-07-11 22:59:31 -04:00
parent b596f21e61
commit d8139e9605
1 changed files with 5 additions and 0 deletions
@@ -351,6 +351,11 @@ bool Epub::load(const bool buildIfMissing, const bool skipLoadingCss) {
        Storage.removeDir((cachePath + "/sections").c_str());
      }
    }
+    // Release the resolved CSS rule map: it is only needed transiently while building
+    // section caches, and createSectionFile reloads it from cache on demand. Holding it
+    // resident pins tens of KB for the whole reading session (more on warm resume into
+    // an already-cached chapter, where createSectionFile never runs to clear it).
+    cssParser->clear();
    LOG_DBG("EBP", "Loaded ePub: %s", filepath.c_str());
    return true;
  }