Add Join() function

src/zm_analysis_thread.cpp

@@ -24,6 +24,9 @@ void AnalysisThread::Start() {
 void AnalysisThread::Stop() {
   terminate_ = true;
 }
+void AnalysisThread::Join() {
+  if (thread_.joinable()) thread_.join();
+}
 
 void AnalysisThread::Run() {
   while (!(terminate_ or zm_terminate)) {

src/zm_analysis_thread.h

@@ -16,6 +16,7 @@ class AnalysisThread {
 
   void Start();
   void Stop();
+  void Join();
   bool Stopped() const { return terminate_; }
 
  private:

src/zm_decoder_thread.cpp

@@ -23,6 +23,10 @@ void DecoderThread::Stop() {
   terminate_ = true;
 }
 
+void DecoderThread::Join() {
+  if (thread_.joinable()) thread_.join();
+}
+
 void DecoderThread::Run() {
   Debug(2, "DecoderThread::Run() for %d", monitor_->Id());
 

src/zm_decoder_thread.h

@@ -16,6 +16,7 @@ class DecoderThread {
 
   void Start();
   void Stop();
+  void Join();
 
  private:
   void Run();