130 lines
3.1 KiB
C++
130 lines
3.1 KiB
C++
#include <QRunnable>
|
|
#include <QMutex>
|
|
#include <QDirIterator>
|
|
#include <QThread>
|
|
#include <QThreadPool>
|
|
#include <functional>
|
|
#include "dirscanworker.h"
|
|
#include "paralleldirscanner.h"
|
|
|
|
ParallelDirScanner::ParallelDirScanner()
|
|
{
|
|
this->threadpool.setMaxThreadCount(QThread::idealThreadCount() / 2);
|
|
}
|
|
|
|
ConcurrentQueue<QString> &ParallelDirScanner::getResults()
|
|
{
|
|
return this->resultPathsQueue;
|
|
}
|
|
|
|
void ParallelDirScanner::setIgnorePatterns(QStringList patterns)
|
|
{
|
|
this->ignorePatterns = patterns;
|
|
}
|
|
|
|
void ParallelDirScanner::setPaths(QVector<QString> paths)
|
|
{
|
|
this->paths = paths;
|
|
}
|
|
|
|
void ParallelDirScanner::cancel()
|
|
{
|
|
this->stopToken.store(true, std::memory_order_seq_cst);
|
|
}
|
|
|
|
void ParallelDirScanner::handleWorkersProgress(unsigned int progress)
|
|
{
|
|
this->processedPaths += progress;
|
|
if(!this->stopToken.load(std::memory_order_seq_cst))
|
|
emit this->progress(progress, this->processedPaths);
|
|
}
|
|
|
|
void ParallelDirScanner::handleWorkersFinish()
|
|
{
|
|
// no mutexes required due to queued connection
|
|
++finishedWorkers;
|
|
if(this->stopToken.load(std::memory_order_seq_cst) || finishedWorkers == getThreadsNum())
|
|
{
|
|
running = false;
|
|
emit scanComplete();
|
|
}
|
|
delete QObject::sender();
|
|
}
|
|
|
|
unsigned int ParallelDirScanner::getThreadsNum() const
|
|
{
|
|
int threadsNum = this->threadpool.maxThreadCount();
|
|
if(threadsNum > this->paths.size())
|
|
{
|
|
threadsNum = this->paths.size();
|
|
}
|
|
return threadsNum;
|
|
}
|
|
|
|
void ParallelDirScanner::scan()
|
|
{
|
|
this->stopToken.store(false, std::memory_order_relaxed);
|
|
this->finishedWorkers = 0;
|
|
this->processedPaths = 0;
|
|
this->targetPathsQueue.clear();
|
|
this->resultPathsQueue.clear();
|
|
|
|
/* First scan without subdirs. This way we collect paths for the threads */
|
|
WildcardMatcher matcher;
|
|
matcher.setPatterns(this->ignorePatterns);
|
|
for(QString &path : this->paths)
|
|
{
|
|
QDirIterator iterator(path, QStringList{}, QDir::Dirs | QDir::QDir::Files | QDir::NoDotAndDotDot);
|
|
while(iterator.hasNext())
|
|
{
|
|
QString path = iterator.next();
|
|
if(matcher.match(path))
|
|
{
|
|
continue;
|
|
}
|
|
QFileInfo info = iterator.fileInfo();
|
|
if(!info.isSymLink())
|
|
{
|
|
if(info.isDir())
|
|
{
|
|
this->targetPathsQueue.enqueue(info.absoluteFilePath());
|
|
}
|
|
else
|
|
{
|
|
this->resultPathsQueue.enqueue(info.absoluteFilePath());
|
|
this->processedPaths += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
emit this->progress(this->processedPaths, this->processedPaths);
|
|
int threadsNum = getThreadsNum();
|
|
if(threadsNum == 0)
|
|
{
|
|
emit scanComplete();
|
|
return;
|
|
}
|
|
running = true;
|
|
for(int i = 0; i < threadsNum; i++)
|
|
{
|
|
DirScanWorker *runnable = new DirScanWorker(this->targetPathsQueue, this->resultPathsQueue,
|
|
this->ignorePatterns, 1000, this->stopToken);
|
|
runnable->setAutoDelete(false);
|
|
connect(runnable, &DirScanWorker::progress, this, &ParallelDirScanner::handleWorkersProgress,
|
|
Qt::QueuedConnection);
|
|
connect(runnable, &DirScanWorker::finished, this, &ParallelDirScanner::handleWorkersFinish,
|
|
Qt::QueuedConnection);
|
|
threadpool.start(runnable);
|
|
}
|
|
}
|
|
|
|
bool ParallelDirScanner::isRunning()
|
|
{
|
|
return this->running;
|
|
}
|
|
|
|
unsigned int ParallelDirScanner::pathCount()
|
|
{
|
|
return this->processedPaths;
|
|
}
|