Support for presenting multiple graphs

* grapher/Graph.hxx: New file; class for single graph display.
* grapher/Graph.cxx: New file.
* grapher/GraphData.hxx: Associate title and axis labels with graph
data and not a graph display.
* grapher/GraphWidget.hxx: Move graph-related members to Graph class.
* grapher/GraphWidget.cxx (getExtents, setExtents): Move to Graph
class
(on_expose_event): Move graph rendering to Graph.
(on_button_press_event): Delegate to Graph.
(on_motion_notify_event, on_scroll_event): Modify "active" graph.
* grapher/StapParser.cxx (findTaggedValue): New parsing helper
function.
(io_callback): Support new syntax where properties are attached to
graph data and not the entire graph.
* grapher/grapher.cxx (GrapherWindow): Don't set graph values.
* grapher/Makefile.am: Add Graph.cxx.
* testsuite/systemtap.examples/general/grapher.stp: New property syntax.

1 files changed, 13 insertions, 3 deletions

diff --git a/testsuite/systemtap.examples/general/grapher.stp b/testsuite/systemtap.examples/general/grapher.stp
index 26d35aca..9079cb40 100644
--- a/testsuite/systemtap.examples/general/grapher.stp
+++ b/testsuite/systemtap.examples/general/grapher.stp
@@ -2,11 +2,13 @@
 
 probe begin
 {
-printf ("%%Title:CPU utilization\n");
-printf ("%%XAxisTitle:Time\n");
-printf ("%%YAxisTitle:Percent\n");
 printf ("%%DataSet:cpu 100 00ff00 bar\n");
 printf ("%%DataSet:kbd 75 ff0000 discreet\n");
+printf ("%%DataSet:pty 50 0000ff discreet\n");
+printf ("cpu %%Title:CPU utilization\n");
+printf ("cpu %%XAxisTitle:Time\n");
+printf ("cpu %%YAxisTitle:Percent\n");
+
 }
 
 # CPU utilization
@@ -31,3 +33,11 @@ probe kernel.function("kbd_event") {
  if ($event_type == 1 && $value)
    printf("kbd %d %d\n", gettimeofday_ms(), $event_code)
 }
+
+probe kernel.function("pty_write") {
+ if (count > 0)
+  printf("pty %d %.5s\n", gettimeofday_ms(), buf)
+}
+
+
+