buildman: Show a summary of the build result

When buildman finishes it leaves the last summary line visible, which
shows the number of successful builds, builds with warnings and builds
with errors.

It is useful also to see how many builds were done in total along with
the time taken. Show these on a separate line before buildman finishes.
Signed-off-by: NSimon Glass <sjg@chromium.org>

tools/buildman/builder.py

@@ -192,6 +192,7 @@ class Builder:
         _next_delay_update: Next time we plan to display a progress update
                 (datatime)
         _show_unknown: Show unknown boards (those not built) in summary
+        _start_time: Start time for the build
         _timestamps: List of timestamps for the completion of the last
             last _timestamp_count builds. Each is a datetime object.
         _timestamp_count: Number of timestamps to keep in our list.
@@ -281,6 +282,7 @@ class Builder:
         self._build_period_us = None
         self._complete_delay = None
         self._next_delay_update = datetime.now()
+        self._start_time = datetime.now()
         self.force_config_on_failure = True
         self.force_build_failures = False
         self.force_reconfig = False
@@ -1642,4 +1644,19 @@ class Builder:
         # Wait until we have processed all output
         self.out_queue.join()
         Print()
+
+        msg = 'Completed: %d total built' % self.count
+        if self.already_done:
+           msg += ' (%d previously' % self.already_done
+           if self.already_done != self.count:
+               msg += ', %d newly' % (self.count - self.already_done)
+           msg += ')'
+        duration = datetime.now() - self._start_time
+        if duration > timedelta(microseconds=1000000):
+            if duration.microseconds >= 500000:
+                duration = duration + timedelta(seconds=1)
+            duration = duration - timedelta(microseconds=duration.microseconds)
+            msg += ', duration %s' % duration
+        Print(msg)
+
         return (self.fail, self.warned)

tools/buildman/test.py

@@ -205,9 +205,9 @@ class TestBuild(unittest.TestCase):
             if line.text.strip():
                 count += 1
 
-        # We should get two starting messages, then an update for every commit
-        # built.
-        self.assertEqual(count, len(commits) * len(boards) + 2)
+        # We should get two starting messages, an update for every commit built
+        # and a summary message
+        self.assertEqual(count, len(commits) * len(boards) + 3)
         build.SetDisplayOptions(**kwdisplay_args);
         build.ShowSummary(self.commits, board_selected)
         if echo_lines: