Rename an mca param to something more intuitive and set its default to 0 so the module only runs if a non-zero value is provided

This commit was SVN r23609.

orte/mca/sensor/heartbeat/sensor_heartbeat.c

@@ -168,7 +168,7 @@ static void start(orte_jobid_t jobid)
     }
     
     /* setup the send */
-    time = mca_sensor_heartbeat_component.beat * 1000; /* convert to microsecs */
+    time = mca_sensor_heartbeat_component.rate * 1000; /* convert to microsecs */
     send_ev = (opal_event_t*)malloc(sizeof(opal_event_t));
     opal_evtimer_set(send_ev, send_heartbeat, send_ev);
     send_time.tv_sec = time / 1000000;

orte/mca/sensor/heartbeat/sensor_heartbeat.h

@@ -23,7 +23,7 @@ BEGIN_C_DECLS
 
 struct orte_sensor_heartbeat_component_t {
     orte_sensor_base_component_t super;
-    int beat;
+    int rate;
     int check;
     int missed;
 };

orte/mca/sensor/heartbeat/sensor_heartbeat_component.c

@@ -58,10 +58,10 @@ static int orte_sensor_heartbeat_open(void)
     int tmp;
 
     /* lookup parameters */
-    mca_base_param_reg_int(c, "beat",
+    mca_base_param_reg_int(c, "rate",
-                           "Heartbeat rate in milliseconds (default=100)",
+                           "Heartbeat rate in milliseconds (default=0)",
-                           false, false, 100,  &tmp);
+                           false, false, 0,  &tmp);
-    mca_sensor_heartbeat_component.beat = tmp;
+    mca_sensor_heartbeat_component.rate = tmp;
     
     mca_base_param_reg_int(c, "check",
                            "Check for failure rate in milliseconds (default=500)",
@@ -80,7 +80,7 @@ static int orte_sensor_heartbeat_open(void)
 static int orte_sensor_heartbeat_query(mca_base_module_t **module, int *priority)
 {
     /* only usable by daemons and HNPs */
-    if (0 < mca_sensor_heartbeat_component.beat &&
+    if (0 < mca_sensor_heartbeat_component.rate &&
         (ORTE_PROC_IS_DAEMON || ORTE_PROC_IS_HNP)) {
         *priority = 10;  /* use if we were built */
         *module = (mca_base_module_t *)&orte_sensor_heartbeat_module;