use spaces instead of tab

src/lib/utils/notify.h

@@ -28,45 +28,45 @@
  * class to notify other thread per pipe.
  */
 class Notify {
-	public:
-	/**
-	 * constructs a new instance and do notifying.
-	 */
-	Notify() {
-		int pipefd[2];
-		int ret = pipe(pipefd);
+  public:
+  /**
+   * constructs a new instance and do notifying.
+   */
+  Notify() {
+    int pipefd[2];
+    int ret = pipe(pipefd);
 
-		if (ret == 0) {
-			m_recvfd = pipefd[0];
-			m_sendfd = pipefd[1];
+    if (ret == 0) {
+      m_recvfd = pipefd[0];
+      m_sendfd = pipefd[1];
 
-			fcntl(m_sendfd, F_SETFL, O_NONBLOCK);
-		}
-	}
+      fcntl(m_sendfd, F_SETFL, O_NONBLOCK);
+    }
+  }
 
-	/**
-	 * destructor.
-	 */
-	~Notify() { close(m_sendfd); close(m_recvfd); }
+  /**
+   * destructor.
+   */
+  ~Notify() { close(m_sendfd); close(m_recvfd); }
 
-	/**
-	 * file descriptor to watch for notify event.
-	 * @return the notification value.
-	 */
-	int notifyFD() { return m_recvfd; }
+  /**
+   * file descriptor to watch for notify event.
+   * @return the notification value.
+   */
+  int notifyFD() { return m_recvfd; }
 
-	/**
-	 * write notify event to file descriptor.
-	 * @return result of writing notification.
-	 */
-	int notify() const { return write(m_sendfd, "1", 1); }
+  /**
+   * write notify event to file descriptor.
+   * @return result of writing notification.
+   */
+  int notify() const { return write(m_sendfd, "1", 1); }
 
-	private:
-	/** file descriptor to watch */
-	int m_recvfd;
+  private:
+  /** file descriptor to watch */
+  int m_recvfd;
 
-	/** file descriptor to notify */
-	int m_sendfd;
+  /** file descriptor to notify */
+  int m_sendfd;
 };
 
 #endif // LIB_UTILS_NOTIFY_H_