Flush stdout after printing information about starting processes

Otherwise the output will be printed at an arbitrary point in time, and
in arbitrary order wrt stderr output.

Change-Id: Ic989387eb2dfd4373f5187e5604f2f688b63373a
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

1 files changed, 6 insertions, 0 deletions

diff --git a/packaging-tools/threadedwork.py b/packaging-tools/threadedwork.py
index b47d66fc9..9afb93eb0 100644
--- a/packaging-tools/threadedwork.py
+++ b/packaging-tools/threadedwork.py
@@ -95,11 +95,17 @@ class StdOutHook:
 
                 sys.__stdout__.write(newOutput + cleanerString)
 
+    def flush(self):
+        sys.__stdout__.flush()
+
 class StdErrHook:
     def write(self, text):
         with outputLock:
             sys.__stderr__.write(text)
 
+    def flush(self):
+        sys.__stderr__.flush()
+
 # builtin print() isn't threadsafe, lets make it threadsafe
 def threadedPrint(*a, **b):
     with outputLock: