Add session timer

src/session/session_private.h

@@ -14,6 +14,14 @@ extern "C"
 #include "session.h"
 #include "session_address.h"
 
+#define TIMEOUT_CB_OVERRIDE
+struct timeout_cb
+{
+    session_expire_cb fn;
+    struct session *arg;
+};
+#include "timeout.h"
+
 #define EX_DATA_MAX_COUNT 128
 #define SESSION_EVENT_QUEUE_SIZE 256
 
@@ -45,7 +53,6 @@ struct session
     // session timestamp
     uint64_t create_time;
     uint64_t last_time;
-    uint64_t expire_time;
 
     /******************************
      * Session Ev Queue Zone
@@ -64,6 +71,8 @@ struct session
      ******************************/
 
     // session timer
+    struct timeout timeout;
+    uint64_t abs_expire_ts;
 
     /******************************
      * Session Pool Zone