Graceful shutdown vpp to avoid core dump (#1714)

Signed-off-by: Yue Gao <[email protected]>

Author: yue-fred-gao

vslib/vpp/SwitchVpp.cpp

@@ -39,6 +39,21 @@ SwitchVpp::SwitchVpp(
     vpp_dp_initialize();
 }
 
+SwitchVpp::~SwitchVpp()
+{
+    SWSS_LOG_ENTER();
+
+    // Signal the vpp events thread to stop
+    m_run_vpp_events_thread = false;
+
+    // Wait for the thread to finish gracefully
+    if (m_vpp_thread && m_vpp_thread->joinable()) {
+        m_vpp_thread->join();
+    }
+
+    SWSS_LOG_NOTICE("SwitchVpp destructor completed");
+}
+
 sai_status_t SwitchVpp::create_qos_queues_per_port(
         _In_ sai_object_id_t port_id)
 {

vslib/vpp/SwitchVpp.h

@@ -41,7 +41,7 @@ namespace saivs
                     _In_ std::shared_ptr<SwitchConfig> config,
                     _In_ std::shared_ptr<WarmBootState> warmBootState);
 
-            virtual ~SwitchVpp() = default;
+            virtual ~SwitchVpp();
 
         protected: