-/***************************************************************************
- * Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com> *
- * Copyright (C) 2013 by Frank Reininghaus <frank78ac@googlemail.com> *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
+ * SPDX-FileCopyrightText: 2013 Frank Reininghaus <frank78ac@googlemail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
#include "kdirectorycontentscounter.h"
#include "kitemviews/kfileitemmodel.h"
#include <KDirWatch>
#include <QFileInfo>
+#include <QDir>
#include <QThread>
+namespace {
+ /// cache of directory counting result
+ static QHash<QString, QPair<int, long>> *s_cache;
+}
+
KDirectoryContentsCounter::KDirectoryContentsCounter(KFileItemModel* model, QObject* parent) :
QObject(parent),
m_model(model),
m_workerThread->start();
}
+ if (s_cache == nullptr) {
+ s_cache = new QHash<QString, QPair<int, long>>();
+ }
+
m_worker = new KDirectoryContentsCounterWorker();
m_worker->moveToThread(m_workerThread);
- ++m_workersCount;
connect(this, &KDirectoryContentsCounter::requestDirectoryContentsCount,
m_worker, &KDirectoryContentsCounterWorker::countDirectoryContents);
KDirectoryContentsCounter::~KDirectoryContentsCounter()
{
- --m_workersCount;
-
- if (m_workersCount > 0) {
+ if (m_workerThread->isRunning()) {
// The worker thread will continue running. It could even be running
// a method of m_worker at the moment, so we delete it using
// deleteLater() to prevent a crash.
}
}
-void KDirectoryContentsCounter::addDirectory(const QString& path)
+void KDirectoryContentsCounter::scanDirectory(const QString& path)
{
startWorker(path);
}
-int KDirectoryContentsCounter::countDirectoryContentsSynchronously(const QString& path)
+void KDirectoryContentsCounter::slotResult(const QString& path, int count, long size)
{
- const QString resolvedPath = QFileInfo(path).canonicalFilePath();
+ m_workerIsBusy = false;
+
+ const QFileInfo info = QFileInfo(path);
+ const QString resolvedPath = info.canonicalFilePath();
if (!m_dirWatcher->contains(resolvedPath)) {
m_dirWatcher->addDir(resolvedPath);
m_watchedDirs.insert(resolvedPath);
}
- KDirectoryContentsCounterWorker::Options options;
-
- if (m_model->showHiddenFiles()) {
- options |= KDirectoryContentsCounterWorker::CountHiddenFiles;
- }
-
- if (m_model->showDirectoriesOnly()) {
- options |= KDirectoryContentsCounterWorker::CountDirectoriesOnly;
+ if (!m_priorityQueue.empty()) {
+ const QString firstPath = m_priorityQueue.front();
+ m_priorityQueue.pop_front();
+ startWorker(firstPath);
+ } else if (!m_queue.empty()) {
+ const QString firstPath = m_queue.front();
+ m_queue.pop_front();
+ startWorker(firstPath);
}
- return KDirectoryContentsCounterWorker::subItemsCount(path, options);
-}
-
-void KDirectoryContentsCounter::slotResult(const QString& path, int count)
-{
- m_workerIsBusy = false;
-
- const QString resolvedPath = QFileInfo(path).canonicalFilePath();
-
- if (!m_dirWatcher->contains(resolvedPath)) {
- m_dirWatcher->addDir(resolvedPath);
- m_watchedDirs.insert(resolvedPath);
+ if (s_cache->contains(resolvedPath)) {
+ const auto pair = s_cache->value(resolvedPath);
+ if (pair.first == count && pair.second == size) {
+ // no change no need to send another result event
+ return;
+ }
}
- if (!m_queue.isEmpty()) {
- startWorker(m_queue.dequeue());
+ if (info.dir().path() == m_model->rootItem().url().path()) {
+ // update cache or overwrite value
+ // when path is a direct children of the current model root
+ s_cache->insert(resolvedPath, QPair<int, long>(count, size));
}
- emit result(path, count);
+ // sends the results
+ Q_EMIT result(path, count, size);
}
void KDirectoryContentsCounter::slotDirWatchDirty(const QString& path)
if (!m_watchedDirs.isEmpty()) {
// Don't let KDirWatch watch for removed items
if (allItemsRemoved) {
- foreach (const QString& path, m_watchedDirs) {
+ for (const QString& path : qAsConst(m_watchedDirs)) {
m_dirWatcher->removeDir(path);
}
m_watchedDirs.clear();
void KDirectoryContentsCounter::startWorker(const QString& path)
{
+ const QString resolvedPath = QFileInfo(path).canonicalFilePath();
+ const bool alreadyInCache = s_cache->contains(resolvedPath);
+ if (alreadyInCache) {
+ // fast path when in cache
+ // will be updated later if result has changed
+ const auto pair = s_cache->value(resolvedPath);
+ Q_EMIT result(path, pair.first, pair.second);
+ }
+
if (m_workerIsBusy) {
- m_queue.enqueue(path);
+ if (std::find(m_queue.begin(), m_queue.end(), path) == m_queue.end() &&
+ std::find(m_priorityQueue.begin(), m_priorityQueue.end(), path) == m_priorityQueue.end()) {
+ if (alreadyInCache) {
+ m_queue.push_back(path);
+ } else {
+ // append to priority queue
+ m_priorityQueue.push_back(path);
+ }
+ }
} else {
KDirectoryContentsCounterWorker::Options options;
options |= KDirectoryContentsCounterWorker::CountDirectoriesOnly;
}
- emit requestDirectoryContentsCount(path, options);
+ Q_EMIT requestDirectoryContentsCount(path, options);
m_workerIsBusy = true;
}
}
QThread* KDirectoryContentsCounter::m_workerThread = nullptr;
-int KDirectoryContentsCounter::m_workersCount = 0;
projects / dolphin.git / blobdiff