Fix bug in forwarder pid file writing.

build/android/pylib/forwarder.py

Index: build/android/pylib/forwarder.py
diff --git a/build/android/pylib/forwarder.py b/build/android/pylib/forwarder.py
index 5e45043089480b3270e946d398418673c13fad8e..5f40a941a63cc741b0c912b0670228d62d00e2ec 100644
--- a/build/android/pylib/forwarder.py
+++ b/build/android/pylib/forwarder.py
@@ -270,6 +270,7 @@ class Forwarder(object):
       pid_file.seek(0)
       pid_file.write(
           '%s:%s' % (pid_for_lock, str(_GetProcessStartTime(pid_for_lock))))
+      pid_file.truncate()

[jbudorick, 2014/11/12 02:01:33]

Is this how we want to fix this? What if we made _GetProcessStartTime return a
consistent string representation of the start time (e.g. 3 digits after the
decimal)?

[jbudorick, 2014/11/12 02:03:33]

Or perhaps we should change how we evaluate for equality above?

 
   def _InitDeviceLocked(self, device, tool):
     """Initializes the device_forwarder daemon for a specific device (once).