GN: Side-load dex files as well as native code in incremental installs

build/android/pylib/utils/time_profile.py

Index: build/android/pylib/utils/time_profile.py
diff --git a/build/android/pylib/utils/time_profile.py b/build/android/pylib/utils/time_profile.py
index 45da7ff3af7df607d2938cde9fa8ee2d9fa24e2c..d2e82ca99866895d36559d8c113b5e58d8e84e8a 100644
--- a/build/android/pylib/utils/time_profile.py
+++ b/build/android/pylib/utils/time_profile.py
@@ -9,18 +9,37 @@ import time
 class TimeProfile(object):
   """Class for simple profiling of action, with logging of cost."""
 
-  def __init__(self, description):
+  def __init__(self, description='operation'):
     self._starttime = None
+    self._endtime = None
     self._description = description
     self.Start()
 
   def Start(self):
     self._starttime = time.time()
+    self._endtime = None
 
-  def Stop(self):
-    """Stop profiling and dump a log."""
-    if self._starttime:
-      stoptime = time.time()
-      logging.info('%fsec to perform %s',
-                   stoptime - self._starttime, self._description)
-      self._starttime = None
+  def GetDelta(self):
+    """Returns the rounded delta.
+
+    Also stops the timer if Stop() has not already been called.
+    """
+    if self._endtime is None:
+      self.Stop(log=False)
+    delta = self._endtime - self._starttime
+    delta = round(delta, 2) if delta < 1 else round(delta, 1)

[jbudorick, 2015/09/15 18:36:41]

nit: I'd prefer this rounding threshold at 10s instead of 1s

[agrieve, 2015/09/15 19:30:05]

Done.

+    return delta
+
+  def LogResult(self):
+    """Logs the result."""
+    logging.info('%s seconds to perform %s', self.GetDelta(), self._description)
+
+  def Stop(self, log=True):
+    """Stop profiling.
+
+    Args:
+      log: Log the delta (defaults to true).
+    """
+    self._endtime = time.time()
+    if log:
+      self.LogResult()