try to use clock_gettime to make sure we don't care if the system time changes

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7165 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/private/switch_core_pvt.h

@@ -158,6 +158,8 @@ struct switch_media_bug {
 
 struct switch_runtime {
 	switch_time_t initiated;
+	switch_time_t reference;
+	int64_t offset;
 	switch_hash_t *global_vars;
 	switch_hash_t *mime_types;
 	switch_memory_pool_t *memory_pool;

src/include/switch_core.h

@@ -1536,6 +1536,8 @@ SWITCH_DECLARE(void) switch_core_memory_reclaim_events(void);
 SWITCH_DECLARE(void) switch_core_memory_reclaim_logger(void);
 SWITCH_DECLARE(void) switch_core_memory_reclaim_all(void);
 SWITCH_DECLARE(void) switch_core_setrlimits(void);
+SWITCH_DECLARE(void) switch_time_sync(void);
+SWITCH_DECLARE(time_t) switch_timestamp(time_t *t);
 
 ///\}
 

src/include/switch_types.h

@@ -1065,7 +1065,8 @@ typedef enum {
 	SCSC_SPS,
 	SCSC_LAST_SPS,
 	SCSC_RECLAIM,
-	SCSC_MAX_SESSIONS
+	SCSC_MAX_SESSIONS,
+	SCSC_SYNC_CLOCK
 } switch_session_ctl_t;
 
 typedef struct apr_pool_t switch_memory_pool_t;