switch to conditional broadcast mode on slow kernels

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@16308 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/private/switch_core_pvt.h

@@ -215,6 +215,7 @@ struct switch_runtime {
 	char *odbc_pass;
 	uint32_t debug_level;
 	uint32_t runlevel;
+	uint32_t tipping_point;
 };
 
 extern struct switch_runtime runtime;

src/include/switch_core.h

@@ -1238,6 +1238,8 @@ SWITCH_DECLARE(void) switch_hash_this(_In_ switch_hash_index_t *hi, _Out_opt_ptr
 SWITCH_DECLARE(switch_status_t) switch_core_timer_init(switch_timer_t *timer, const char *timer_name, int interval, int samples,
 													   switch_memory_pool_t *pool);
 
+SWITCH_DECLARE(void) switch_time_calibrate_clock(void);
+
 /*! 
   \brief Wait for one cycle on an existing timer
   \param timer the timer to wait on

src/include/switch_types.h

@@ -1436,7 +1436,8 @@ typedef enum {
 	SCSC_SEND_SIGHUP,
 	SCSC_DEBUG_LEVEL,
 	SCSC_FLUSH_DB_HANDLES,
-	SCSC_SHUTDOWN_NOW
+	SCSC_SHUTDOWN_NOW,
+	SCSC_CALIBRATE_CLOCK
 } switch_session_ctl_t;
 
 typedef enum {