diff --git a/libsearch/index/construct-document.cpp b/libsearch/index/construct-document.cpp
index 5a0cdaa..2021fc2 100644
--- a/libsearch/index/construct-document.cpp
+++ b/libsearch/index/construct-document.cpp
@@ -27,16 +27,12 @@
 //extern QList<Document> *_doc_list_path;
 //extern QMutex  _mutex_doc_list_path;
 
-ConstructDocumentForPath::ConstructDocumentForPath(QVector<QString> list, IndexGenerator *parent)
+ConstructDocumentForPath::ConstructDocumentForPath(QVector<QString> list)
 {
     this->setAutoDelete(true);
     m_list = std::move(list);
 }
 
-ConstructDocumentForPath::~ConstructDocumentForPath()
-{
-}
-
 void ConstructDocumentForPath::run()
 {
 //    qDebug()<<"ConstructDocumentForPath";
@@ -103,17 +99,12 @@ void ConstructDocumentForPath::run()
     return;
 }
 
-ConstructDocumentForContent::ConstructDocumentForContent(QString path,QObject *parent)
+ConstructDocumentForContent::ConstructDocumentForContent(QString path)
 {
     this->setAutoDelete(true);
     m_path = std::move(path);
 }
 
-ConstructDocumentForContent::~ConstructDocumentForContent()
-{
-
-}
-
 void ConstructDocumentForContent::run()
 {
 //    qDebug() << "ConstructDocumentForContent  currentThreadId()" << QThread::currentThreadId();
diff --git a/libsearch/index/construct-document.h b/libsearch/index/construct-document.h
index 6f77258..46fab04 100644
--- a/libsearch/index/construct-document.h
+++ b/libsearch/index/construct-document.h
@@ -31,28 +31,23 @@ class IndexGenerator;
 class ConstructDocumentForPath : public QRunnable
 {
 public:
-    explicit ConstructDocumentForPath(QVector<QString> list,IndexGenerator *parent = nullptr);
-    ~ConstructDocumentForPath();
+    explicit ConstructDocumentForPath(QVector<QString> list);
+    ~ConstructDocumentForPath() = default;
 protected:
     void run();
 private:
     QVector<QString> m_list;
-
-
 };
 
-class ConstructDocumentForContent : public QObject, public QRunnable
+class ConstructDocumentForContent : public QRunnable
 {
-    Q_OBJECT
 public:
-    explicit ConstructDocumentForContent(QString path,QObject *parent = nullptr);
-    ~ConstructDocumentForContent();
+    explicit ConstructDocumentForContent(QString path);
+    ~ConstructDocumentForContent() = default;
 protected:
     void run();
 private:
     QString m_path;
-
-
 };
 
 #endif // CONSTRUCTDOCUMENT_H
diff --git a/libsearch/index/first-index.cpp b/libsearch/index/first-index.cpp
index b840895..4d38903 100644
--- a/libsearch/index/first-index.cpp
+++ b/libsearch/index/first-index.cpp
@@ -160,7 +160,8 @@ void FirstIndex::run(){
         QtConcurrent::run([&](){
             sem.acquire(2);
             mutex3.unlock();
-            QQueue<QString>* tmp = new QQueue<QString>();;
+            QQueue<QString>* tmp = new QQueue<QString>();
+            qDebug()<<"q_content_index:"<<q_content_index->size();
             while (!this->q_content_index->empty()) {
 //                for (size_t i = 0; (i < this->u_send_length) && (!this->q_content_index->empty()); ++i){
                 for (size_t i = 0; (i < 30) && (!this->q_content_index->empty()); ++i){
diff --git a/libsearch/index/index-generator.cpp b/libsearch/index/index-generator.cpp
index 5105058..35a325e 100644
--- a/libsearch/index/index-generator.cpp
+++ b/libsearch/index/index-generator.cpp
@@ -63,7 +63,11 @@ bool IndexGenerator::setIndexdataPath()
 bool IndexGenerator::creatAllIndex(QQueue<QVector<QString> > *messageList)
 {
 //    FileUtils::_index_status |= 0x1;
+//    qDebug() << messageList->size();
     HandlePathList(messageList);
+    if (_doc_list_path == NULL){
+        return false;
+    }
     qDebug()<<"begin creatAllIndex";
     GlobalSettings::getInstance()->setValue(INDEX_DATABASE_STATE,"0");
     try
@@ -75,6 +79,7 @@ bool IndexGenerator::creatAllIndex(QQueue<QVector<QString> > *messageList)
 //        m_indexer.set_stemming_strategy(Xapian::TermGenerator::STEM_SOME);
 
 //        int count =0;
+
         for (auto i : *_doc_list_path){
 
             insertIntoDatabase(i);
@@ -107,6 +112,9 @@ bool IndexGenerator::creatAllIndex(QQueue<QString> *messageList)
 //    FileUtils::_index_status |= 0x2;
     HandlePathList(messageList);
     qDebug()<<"begin creatAllIndex for content";
+    if (_doc_list_content == NULL){
+        return false;
+    }
     int size = _doc_list_content->size();
     if(!size == 0)
     {
@@ -247,8 +255,8 @@ void IndexGenerator::HandlePathList(QQueue<QVector<QString>> *messageList)
 //        delete constructer;
 //    constructer = nullptr;
 
-
-    qDebug()<<_doc_list_path->size();
+//    qDebug()<<_doc_list_path->size();
+//    qWarning() << _doc_list_path;
 //    QList<Document> docList = future.results();
 //    m_doc_list_path = new QList<Document>(docList);
 //    m_doc_list_path = std::move(future.results());
@@ -286,7 +294,9 @@ void IndexGenerator::HandlePathList(QQueue<QString> *messageList)
 
 //    QList<Document> docList = future.results();
 //    m_doc_list_content = new QList<Document>(docList);
-    qDebug()<<_doc_list_content->size();
+
+//    qDebug()<<_doc_list_content->size();
+
 //    QList<Document> docList = future.results();
 //    m_doc_list_content = new QList<Document>(docList);
 //    m_doc_list_content = std::move(future.results());
diff --git a/libsearch/index/ukui-search-qdbus.cpp b/libsearch/index/ukui-search-qdbus.cpp
index 324c51e..ce39f37 100644
--- a/libsearch/index/ukui-search-qdbus.cpp
+++ b/libsearch/index/ukui-search-qdbus.cpp
@@ -44,5 +44,5 @@ void UkuiSearchQDBus::setInotifyMaxUserWatches()
     // sysctl
     this->tmpSystemQDBusInterface->call("setInotifyMaxUserWatchesStep2");
     // /etc/sysctl.conf
-    this->tmpSystemQDBusInterface->call("setInotifyMaxUserWatchesStep3");
+//    this->tmpSystemQDBusInterface->call("setInotifyMaxUserWatchesStep3");
 }
diff --git a/src/main.cpp b/src/main.cpp
index 9551cdd..f1468df 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -124,6 +124,27 @@ void centerToScreen(QWidget* widget) {
 
 int main(int argc, char *argv[])
 {
+    char *p_home = NULL;
+
+    unsigned int i = 0;
+    while(p_home == NULL)
+    {
+        ::sleep(1);
+        ++i;
+        p_home = getenv("HOME");
+        if(i%5==0)
+        {
+            qWarning()<<"I can't find home! I'm done here!!";
+            printf("I can't find home! I'm done here!!");
+        }
+    }
+    p_home = NULL;
+    while(!QDir(QDir::homePath()).exists())
+    {
+        qWarning()<<"Home not exits!!";
+        printf("Home not exits!!");
+        ::sleep(1);
+    }
     unlink(UKUI_SEARCH_PIPE_PATH);
     int retval = mkfifo(UKUI_SEARCH_PIPE_PATH, 0777);
     if(retval == -1)
@@ -247,6 +268,7 @@ int main(int argc, char *argv[])
 
 //    FirstIndex fi("/home/zhangzihao/Desktop/qwerty");
 //    FirstIndex* fi = new FirstIndex("/home/zhangzihao/Desktop/qwerty");
+
     FirstIndex fi("/home/zhangzihao/Desktop");
     fi.start();
 //    fi.wait();