[gnome-continuous-yocto/gnomeostree-3.28-rocko: 2557/8267] bitbake: runbuilds: process builds on SIGUSR1

[Emmanuele Bassi <ebassi src gnome org>]

commit 64d284b26c2e9b0fcd03119302bd8512fe317cc1
Author: Ed Bartosh <ed bartosh linux intel com>
Date:   Fri Sep 16 17:22:31 2016 +0100

    bitbake: runbuilds: process builds on SIGUSR1
    
    Run main processing function 'runbuild' only if SIGUSR1 is
    received. This signal is sent by Toaster when build status
    is changed (either started, cancelled or finished).
    
    This should stop continuous database polling as run_builds function
    will be called only when needed, i.e. after build status is changed.
    
    [YOCTO #8918]
    
    (Bitbake rev: 62d598cc5aa01d23f1e9284e9e926bd55b1d1878)
    
    Signed-off-by: Ed Bartosh <ed bartosh linux intel com>
    Signed-off-by: Michael Wood <michael g wood intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 .../bldcontrol/management/commands/runbuilds.py    |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/bitbake/lib/toaster/bldcontrol/management/commands/runbuilds.py 
b/bitbake/lib/toaster/bldcontrol/management/commands/runbuilds.py
index a703770..61a520c 100644
--- a/bitbake/lib/toaster/bldcontrol/management/commands/runbuilds.py
+++ b/bitbake/lib/toaster/bldcontrol/management/commands/runbuilds.py
@@ -11,9 +11,9 @@ from orm.models import Build, ToasterSetting, LogMessage, Target
 
 import os
 import logging
-import time
 import sys
 import traceback
+import signal
 
 logger = logging.getLogger("toaster")
 
@@ -175,6 +175,8 @@ class Command(NoArgsCommand):
             logger.warn("runbuilds: schedule exception %s" % str(e))
 
     def handle_noargs(self, **options):
+        signal.signal(signal.SIGUSR1, lambda sig, frame: None)
+
         while True:
+            signal.pause()
             self.runbuild()
-            time.sleep(1)