add func sf_enable_exit_on_oom

src/sf_func.c

@@ -41,3 +41,16 @@ int sf_connect_to_server(const char *ip_addr, const int port, int *sock)
 
     return 0;
 }
+
+static void sf_memory_oom_notify_callback(const size_t curr_size)
+{
+    logCrit("file: "__FILE__", line: %d, "
+            "alloc %"PRId64" bytes fail, exiting ...",
+            __LINE__, (int64_t)curr_size);
+    SF_G_CONTINUE_FLAG = false;
+}
+
+void sf_enable_exit_on_oom()
+{
+    g_oom_notify = sf_memory_oom_notify_callback;
+}

src/sf_func.h

@@ -12,6 +12,8 @@ extern "C" {
 
 int sf_connect_to_server(const char *ip_addr, const int port, int *sock);
 
+void sf_enable_exit_on_oom();
+
 #ifdef __cplusplus
 }
 #endif