1 files changed, 39 insertions, 0 deletions

diff --git a/trace-graph.c b/trace-graph.c
index 6971ec5..d3c7b1f 100644
--- a/trace-graph.c
+++ b/trace-graph.c
@@ -1708,11 +1708,15 @@ static void draw_info(struct graph_info *ginfo,
 
 void trace_graph_select_by_time(struct graph_info *ginfo, guint64 time)
 {
+        struct record *record = NULL;
+        GtkAdjustment *vadj;
+        gint view_start;
         gint view_width;
         gint width;
         gint mid;
         gint start;
         gint end;
+        gint cpu;
         guint64 old_start_time = ginfo->view_start_time;
 
         view_width = gtk_adjustment_get_page_size(ginfo->hadj);
@@ -1759,6 +1763,41 @@ void trace_graph_select_by_time(struct graph_info *ginfo, guint64 time)
         ginfo->cursor = time;
 
         update_with_backend(ginfo, 0, 0, width, ginfo->draw_height);
+
+        /*
+         * If a record exists at this exact time value, we should
+         * make sure that it is in view.
+         */
+        for (cpu = 0; cpu < ginfo->cpus; cpu++) {
+                tracecmd_set_cpu_to_timestamp(ginfo->handle, cpu, time);
+                record = tracecmd_read_data(ginfo->handle, cpu);
+                while (record && record->ts < time) {
+                        free_record(record);
+                        record = tracecmd_read_data(ginfo->handle, cpu);
+                }
+                if (record && record->ts == time)
+                        break;
+                free_record(record);
+                record = NULL;
+        }
+        free_record(record);
+        if (cpu == ginfo->cpus)
+                return;
+
+        /* Make sure CPU is visible */
+        vadj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(ginfo->scrollwin));
+        view_start = gtk_adjustment_get_value(vadj);
+        view_width = gtk_adjustment_get_page_size(vadj);
+
+        if (CPU_TOP(cpu) > view_start &&
+            CPU_BOTTOM(cpu) < view_start + view_width)
+                return;
+
+        if (CPU_TOP(cpu) < view_start)
+                gtk_adjustment_set_value(vadj, CPU_TOP(cpu) - 5);
+
+        if (CPU_BOTTOM(cpu) > view_start + view_width)
+                gtk_adjustment_set_value(vadj, (CPU_BOTTOM(cpu) - view_width) + 10);
 }
 
 static void graph_free_systems(struct graph_info *ginfo)