[RFC] Precise session management

ext/session/php_session.h

@@ -210,6 +210,13 @@ typedef struct _php_ps_globals {
 	zend_bool use_strict_mode; /* whether or not PHP accepts unknown session ids */
 	zend_bool lazy_write; /* omit session write when it is possible */
 	zend_string *session_vars; /* serialized original session data */
+
+	zval internal_data;
+	zend_long ttl; /* Session TTL - (UPDATED + ttl) < time(NULL) is expiration condition */
+	zend_long ttl_update; /* UPDATED timestamp update frequency - (UPDATED + ttl_update) < time(NULL) is update condition  */
+	zend_long ttl_destroy; /* Time to actually remove session data from storage - (UPDATED + ttl_destroy) < time(NULL) is removal condition  */
+	zend_long regenerate_id; /* Session ID regeneration period - (CREATED + regenerate_id) < time(NULL) is regeneration condition */
+	zend_long num_sids; /* Number of session IDs stored */
 } php_ps_globals;
 
 typedef php_ps_globals zend_ps_globals;