From: Méven Car <meven29@gmail.com>
Date: Mon, 25 May 2020 15:31:51 +0000 (+0000)
Subject: KDirectoryContentsCounter: scan first path not in cache
X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/commitdiff_plain/f6afbbc2401cdd2e722e2ea5d3ad59b960370433

KDirectoryContentsCounter: scan first path not in cache

Use a secondary QLinkedList to store the priority path.
---

diff --git a/src/kitemviews/private/kdirectorycontentscounter.cpp b/src/kitemviews/private/kdirectorycontentscounter.cpp
index a0ed8c27c..05a6ff447 100644
--- a/src/kitemviews/private/kdirectorycontentscounter.cpp
+++ b/src/kitemviews/private/kdirectorycontentscounter.cpp
@@ -103,7 +103,9 @@ void KDirectoryContentsCounter::slotResult(const QString& path, int count, long
         m_watchedDirs.insert(resolvedPath);
     }
 
-    if (!m_queue.isEmpty()) {
+    if (!m_priorityQueue.isEmpty()) {
+        startWorker(m_priorityQueue.takeLast());
+    } else if (!m_queue.isEmpty()) {
         startWorker(m_queue.takeFirst());
     }
 
@@ -167,7 +169,8 @@ void KDirectoryContentsCounter::slotItemsRemoved()
 
 void KDirectoryContentsCounter::startWorker(const QString& path)
 {
-    if (s_cache->contains(path)) {
+    const bool alreadyInCache = s_cache->contains(path);
+    if (alreadyInCache) {
         // fast path when in cache
         // will be updated later if result has changed
         const auto pair = s_cache->value(path);
@@ -175,8 +178,13 @@ void KDirectoryContentsCounter::startWorker(const QString& path)
     }
 
     if (m_workerIsBusy) {
-        if (!m_queue.contains(path)) {
-            m_queue.append(path);
+        if (!m_queue.contains(path) && !m_priorityQueue.contains(path)) {
+            if (alreadyInCache) {
+                m_queue.append(path);
+            } else {
+                // append to priority queue
+                m_priorityQueue.append(path);
+            }
         }
     } else {
         KDirectoryContentsCounterWorker::Options options;
diff --git a/src/kitemviews/private/kdirectorycontentscounter.h b/src/kitemviews/private/kdirectorycontentscounter.h
index 287227bff..01bf30779 100644
--- a/src/kitemviews/private/kdirectorycontentscounter.h
+++ b/src/kitemviews/private/kdirectorycontentscounter.h
@@ -72,6 +72,7 @@ private:
 private:
     KFileItemModel* m_model;
 
+    QLinkedList<QString> m_priorityQueue;
     QLinkedList<QString> m_queue;
 
     static QThread* m_workerThread;