From e91df4d59f6405f1e7b2da1e98704feb11c43596 Mon Sep 17 00:00:00 2001
From: heckflosse <heckflosse67@gmx.de>
Date: Tue, 11 Dec 2018 15:57:17 +0100
Subject: [PATCH] Closing RT is slow on Windows when cache folder contains a
 lot of files, fixes #5083

---
 rtgui/cachemanager.cc | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/rtgui/cachemanager.cc b/rtgui/cachemanager.cc
index 5f73e9e0f..d86f6c41f 100644
--- a/rtgui/cachemanager.cc
+++ b/rtgui/cachemanager.cc
@@ -339,6 +339,25 @@ Glib::ustring CacheManager::getCacheFileName (const Glib::ustring& subDir,
 
 void CacheManager::applyCacheSizeLimitation () const
 {
+    // first count files without fetching file name and timestamp.
+    std::size_t numFiles = 0;
+    try {
+
+        const auto dirName = Glib::build_filename (baseDir, "data");
+        const auto dir = Gio::File::create_for_path (dirName);
+
+        auto enumerator = dir->enumerate_children ("");
+
+        while (numFiles <= options.maxCacheEntries && enumerator->next_file ()) {
+            ++numFiles;
+        }
+
+    } catch (Glib::Exception&) {}
+
+    if (numFiles <= options.maxCacheEntries) {
+        return;
+    }
+
     using FNameMTime = std::pair<Glib::ustring, Glib::TimeVal>;
     std::vector<FNameMTime> files;