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/* This file is part of KDevelop
Copyright 2009 Radu Benea <radub82@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "filemanagerlistjob.h"
#include <interfaces/iproject.h>
#include <project/projectmodel.h>
#include "path.h"
#include "debug.h"
// Qt
#include <QtConcurrentRun>
#include <QDir>
using namespace KDevelop;
namespace {
bool isChildItem(ProjectBaseItem* parent, ProjectBaseItem* child)
{
do {
if (child == parent) {
return true;
}
child = child->parent();
} while(child);
return false;
}
}
class SemaReleaser
{
public:
SemaReleaser(QSemaphore* sem)
: m_sem(sem)
{}
~SemaReleaser()
{
m_sem->release();
}
private:
QSemaphore* m_sem;
};
FileManagerListJob::FileManagerListJob(ProjectFolderItem* item)
: KIO::Job(), m_item(item), m_aborted(false), m_listing(1)
{
qRegisterMetaType<KIO::UDSEntryList>("KIO::UDSEntryList");
qRegisterMetaType<KIO::Job*>();
qRegisterMetaType<KJob*>();
/* the following line is not an error in judgment, apparently starting a
* listJob while the previous one hasn't self-destructed takes a lot of time,
* so we give the job a chance to selfdestruct first */
connect( this, &FileManagerListJob::nextJob, this, &FileManagerListJob::startNextJob, Qt::QueuedConnection );
addSubDir(item);
#ifdef TIME_IMPORT_JOB
m_timer.start();
#endif
}
FileManagerListJob::~FileManagerListJob()
{
// abort and lock to ensure our background list job is stopped
m_aborted = true;
m_listing.acquire();
Q_ASSERT(m_listing.available() == 0);
}
void FileManagerListJob::addSubDir( ProjectFolderItem* item )
{
Q_ASSERT(!m_listQueue.contains(item));
Q_ASSERT(!m_item || m_item == item || m_item->path().isDirectParentOf(item->path()));
m_listQueue.enqueue(item);
}
void FileManagerListJob::handleRemovedItem(ProjectBaseItem* item)
{
// NOTE: the item could be (partially) destroyed already, thus it's not save
// to call e.g. item->folder to cast the base item to a folder item...
auto *folder = reinterpret_cast<ProjectFolderItem*>(item);
m_listQueue.removeAll(folder);
if (isChildItem(item, m_item)) {
abort();
}
}
void FileManagerListJob::slotEntries(KIO::Job* job, const KIO::UDSEntryList& entriesIn)
{
Q_UNUSED(job);
entryList.append(entriesIn);
}
void FileManagerListJob::startNextJob()
{
if ( m_listQueue.isEmpty() || m_aborted ) {
return;
}
#ifdef TIME_IMPORT_JOB
m_subTimer.start();
#endif
m_item = m_listQueue.dequeue();
if (m_item->path().isLocalFile()) {
// optimized version for local projects using QDir directly
// start locking to ensure we don't get destroyed while waiting for the list to finish
m_listing.acquire();
QtConcurrent::run([this] (const Path& path) {
SemaReleaser lock(&m_listing);
if (m_aborted) {
return;
}
QDir dir(path.toLocalFile());
const auto entries = dir.entryInfoList(QDir::NoDotAndDotDot | QDir::AllEntries | QDir::Hidden);
if (m_aborted) {
return;
}
KIO::UDSEntryList results;
std::transform(entries.begin(), entries.end(), std::back_inserter(results), [] (const QFileInfo& info) -> KIO::UDSEntry {
KIO::UDSEntry entry;
entry.fastInsert(KIO::UDSEntry::UDS_NAME, info.fileName());
if (info.isDir()) {
entry.fastInsert(KIO::UDSEntry::UDS_FILE_TYPE, QT_STAT_DIR);
}
if (info.isSymLink()) {
entry.fastInsert(KIO::UDSEntry::UDS_LINK_DEST, info.symLinkTarget());
}
return entry;
});
QMetaObject::invokeMethod(this, "handleResults", Q_ARG(KIO::UDSEntryList, results));
}, m_item->path());
} else {
KIO::ListJob* job = KIO::listDir( m_item->path().toUrl(), KIO::HideProgressInfo );
job->addMetaData(QStringLiteral("details"), QStringLiteral("0"));
job->setParentJob( this );
connect( job, &KIO::ListJob::entries,
this, &FileManagerListJob::slotEntries );
connect( job, &KIO::ListJob::result, this, &FileManagerListJob::slotResult );
}
}
void FileManagerListJob::slotResult(KJob* job)
{
if (m_aborted) {
return;
}
if( job && job->error() ) {
qCDebug(FILEMANAGER) << "error in list job:" << job->error() << job->errorString();
}
handleResults(entryList);
entryList.clear();
}
void FileManagerListJob::handleResults(const KIO::UDSEntryList& entriesIn)
{
if (m_aborted) {
return;
}
#ifdef TIME_IMPORT_JOB
{
auto waited = m_subTimer.elapsed();
m_subWaited += waited;
qCDebug(PROJECT) << "TIME FOR SUB JOB:" << waited << m_subWaited;
}
#endif
emit entries(this, m_item, entriesIn);
if( m_listQueue.isEmpty() ) {
emitResult();
#ifdef TIME_IMPORT_JOB
qCDebug(PROJECT) << "TIME FOR LISTJOB:" << m_timer.elapsed();
#endif
} else {
emit nextJob();
}
}
void FileManagerListJob::abort()
{
m_aborted = true;
bool killed = kill();
Q_ASSERT(killed);
Q_UNUSED(killed);
}
void FileManagerListJob::start()
{
startNextJob();
}
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