diff --git a/src/sf_service.c b/src/sf_service.c
index 42d2a1e..31fc448 100644
--- a/src/sf_service.c
+++ b/src/sf_service.c
@@ -25,7 +25,8 @@
 #include <sys/eventfd.h>
 #endif
 
-static bool bTerminateFlag = false;
+static bool terminate_flag = false;
+static sf_sig_quit_handler sig_quit_handler = NULL;
 
 static void sigQuitHandler(int sig);
 static void sigHupHandler(int sig);
@@ -476,12 +477,16 @@ static void sigDumpHandler(int sig)
 
 static void sigQuitHandler(int sig)
 {
-    if (!bTerminateFlag) {
-        bTerminateFlag = true;
+    if (!terminate_flag) {
+        terminate_flag = true;
         g_sf_global_vars.continue_flag = false;
+        if (sig_quit_handler != NULL) {
+            sig_quit_handler(sig);
+        }
+
         logCrit("file: "__FILE__", line: %d, "
-            "catch signal %d, program exiting...",
-            __LINE__, sig);
+                "catch signal %d, program exiting...",
+                __LINE__, sig);
     }
 }
 
@@ -629,3 +634,8 @@ struct nio_thread_data *sf_get_random_thread_data_ex(SFContext *sf_context)
             (uint64_t)rand() / (uint64_t)RAND_MAX);
     return sf_context->thread_data + index;
 }
+
+void sf_set_sig_quit_handler(sf_sig_quit_handler quit_handler)
+{
+    sig_quit_handler = quit_handler;
+}
diff --git a/src/sf_service.h b/src/sf_service.h
index c7f3c55..b36950d 100644
--- a/src/sf_service.h
+++ b/src/sf_service.h
@@ -12,16 +12,12 @@
 #include "sf_types.h"
 
 typedef void* (*sf_alloc_thread_extra_data_callback)(const int thread_index);
+typedef void (*sf_sig_quit_handler)(int sig);
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-extern int g_server_outer_sock;
-extern int g_server_inner_sock;
-
-extern int g_worker_thread_count;
-
 int sf_service_init_ex2(SFContext *sf_context,
         sf_alloc_thread_extra_data_callback
         alloc_thread_extra_data_callback,
@@ -85,6 +81,7 @@ struct nio_thread_data *sf_get_random_thread_data_ex(SFContext *sf_context);
 #define sf_get_random_thread_data()  \
     sf_get_random_thread_data_ex(&g_sf_context)
 
+void sf_set_sig_quit_handler(sf_sig_quit_handler quit_handler);
 
 #ifdef __cplusplus
 }