+/****************************************************************************
+ * lttv_traceset_context_compute_time_span
+ *
+ * Keep the Time_Span is sync with on the fly addition and removal of traces
+ * in a trace set. It must be called each time a trace is added/removed from
+ * the traceset. It could be more efficient to call it only once a bunch
+ * of traces are loaded, but the calculation is not long, so it's not
+ * critical.
+ *
+ * Author : Xang Xiu Yang
+ * Imported from gtkTraceSet.c by Mathieu Desnoyers
+ ***************************************************************************/
+static void lttv_traceset_context_compute_time_span(
+ LttvTracesetContext *self,
+ TimeInterval *Time_Span)
+{
+ LttvTraceset * traceset = self->ts;
+ int numTraces = lttv_traceset_number(traceset);
+ int i;
+ LttTime s, e;
+ LttvTraceContext *tc;
+ LttTrace * trace;
+
+ for(i=0; i<numTraces;i++){
+ tc = self->traces[i];
+ trace = tc->t;
+
+ ltt_trace_time_span_get(trace, &s, &e);
+
+ if(i==0){
+ Time_Span->startTime = s;
+ Time_Span->endTime = e;
+ }else{
+ if(s.tv_sec < Time_Span->startTime.tv_sec ||
+ (s.tv_sec == Time_Span->startTime.tv_sec
+ && s.tv_nsec < Time_Span->startTime.tv_nsec))
+ Time_Span->startTime = s;
+ if(e.tv_sec > Time_Span->endTime.tv_sec ||
+ (e.tv_sec == Time_Span->endTime.tv_sec &&
+ e.tv_nsec > Time_Span->endTime.tv_nsec))
+ Time_Span->endTime = e;
+ }
+ }
+}
+