diff --git a/libsearch/index/first-index.cpp b/libsearch/index/first-index.cpp
index 878593b..6d5a8bc 100644
--- a/libsearch/index/first-index.cpp
+++ b/libsearch/index/first-index.cpp
@@ -27,6 +27,22 @@
 
 FirstIndex::FirstIndex(const QString& path) : Traverse_BFS(path)
 {
+    // Create a fifo at ~/.config/org.ukui/ukui-search, the fifo is used to control the order of child processes' running.
+    QDir fifoDir = QDir(QDir::homePath()+"/.config/org.ukui/ukui-search");
+    if(!fifoDir.exists())
+        qDebug()<<"create fifo path"<<fifoDir.mkpath(fifoDir.absolutePath());
+
+    unlink(UKUI_SEARCH_PIPE_PATH);
+    int retval = mkfifo(UKUI_SEARCH_PIPE_PATH, 0777);
+    if(retval == -1)
+    {
+        qCritical()<<"creat fifo error!!";
+        syslog(LOG_ERR,"creat fifo error!!\n");
+        assert(false);
+        return;
+    }
+    qDebug()<<"create fifo success\n";
+
     QString indexDataBaseStatus =  GlobalSettings::getInstance()->getValue(INDEX_DATABASE_STATE).toString();
     QString contentIndexDataBaseStatus = GlobalSettings::getInstance()->getValue(CONTENT_INDEX_DATABASE_STATE).toString();
     QString inotifyIndexStatus = GlobalSettings::getInstance()->getValue(INOTIFY_NORMAL_EXIT).toString();
diff --git a/libsearch/index/first-index.h b/libsearch/index/first-index.h
index 2d90ba9..a7af436 100644
--- a/libsearch/index/first-index.h
+++ b/libsearch/index/first-index.h
@@ -34,6 +34,7 @@
 #include <fcntl.h>
 #include <sys/wait.h>
 #include <sys/prctl.h>
+#include <syslog.h>
 //#include <QtConcurrent>
 #include "traverse_bfs.h"
 #include "global-settings.h"
diff --git a/libsearch/index/inotify-index.cpp b/libsearch/index/inotify-index.cpp
index fa7ae2b..2f44bc6 100644
--- a/libsearch/index/inotify-index.cpp
+++ b/libsearch/index/inotify-index.cpp
@@ -256,8 +256,8 @@ void InotifyIndex::run(){
 
     ssize_t numRead;
 
-    for (;;) { /* Read events forever */
-read:
+    while (!isInterruptionRequested()) {
+//    for (;;) { /* Read events forever */
         memset(buf, 0x00, BUF_LEN);
         numRead = read(m_fd, buf, BUF_LEN);
 
@@ -276,14 +276,14 @@ read:
     //        qDebug() << "Read Event: " << currentPath[event->wd] << QString(event->name) << event->cookie << event->wd << event->mask;
             if(event->name[0] != '.'){
                 GlobalSettings::getInstance()->setValue(INOTIFY_NORMAL_EXIT, "0");
-                goto fork;
+                break;
             }
             tmp += sizeof(struct inotify_event) + event->len;
-
         }
-        goto read;
+        if (tmp >= buf + numRead) {
+            continue;
+        }
 
-fork:
         ++FileUtils::_index_status;
 
         pid_t pid;
diff --git a/src/main.cpp b/src/main.cpp
index 9bd7055..4aaa3a2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -118,6 +118,23 @@ void centerToScreen(QWidget* widget) {
     widget->move(desk_x / 2 - x / 2 + desk_rect.left(), desk_y / 2 - y / 2 + desk_rect.top());
 }
 
+void searchMethod(FileUtils::SearchMethod sm){
+    if (FileUtils::SearchMethod::INDEXSEARCH == sm || FileUtils::SearchMethod::DIRECTSEARCH == sm){
+        FileUtils::searchMethod = sm;
+    } else {
+        printf("enum class error!!!\n");
+        qWarning("enum class error!!!\n");
+    }
+    if (FileUtils::SearchMethod::INDEXSEARCH == sm) {
+        FirstIndex fi("/home/zhangzihao/Desktop");
+        fi.start();
+        InotifyIndex* ii = InotifyIndex::getInstance("/home");
+        ii->start();
+    } else if (FileUtils::SearchMethod::DIRECTSEARCH == sm) {
+        InotifyIndex::getInstance("/home")->requestInterruption();
+    }
+}
+
 int main(int argc, char *argv[])
 {
     // Determine whether the home directory has been created, and if not, keep waiting.
@@ -178,7 +195,7 @@ int main(int argc, char *argv[])
         parser.addOptions({debugOption, showsearch});
         parser.process(app);
     }*/
-
+/*
     // Create a fifo at ~/.config/org.ukui/ukui-search, the fifo is used to control the order of child processes' running.
     QDir fifoDir = QDir(QDir::homePath()+"/.config/org.ukui/ukui-search");
     if(!fifoDir.exists())
@@ -194,7 +211,7 @@ int main(int argc, char *argv[])
         return -1;
     }
     qDebug()<<"create fifo success\n";
-
+*/
     // Set max_user_watches to a number which is enough big.
     UkuiSearchQDBus usQDBus;
     usQDBus.setInotifyMaxUserWatches();