[OE-core] [PATCH 14/17] oeqa/core/decorator/oetimeout: Add support for OEQA threaded mode

[Aníbal Limón]

In python signals are only allowed to delivery into the main thread,
to support the threading mode test if the runner is threaded and
use threading.Timer instead.

There are some considerations like SIGALRM interrupts the execution
after N seconds but the Timer only starts a Thread to notice the
timeout and the exception will be raised when the test run ends.

[YOCTO #11450]

Signed-off-by: Aníbal Limón <anibal.limon at linux.intel.com>
---
 meta/lib/oeqa/core/decorator/oetimeout.py | 40 +++++++++++++++++++++++--------
 1 file changed, 30 insertions(+), 10 deletions(-)

diff --git a/meta/lib/oeqa/core/decorator/oetimeout.py b/meta/lib/oeqa/core/decorator/oetimeout.py
index a247583..f85e7d9 100644
--- a/meta/lib/oeqa/core/decorator/oetimeout.py
+++ b/meta/lib/oeqa/core/decorator/oetimeout.py
@@ -1,8 +1,12 @@
 # Copyright (C) 2016 Intel Corporation
 # Released under the MIT license (see COPYING.MIT)
 
-import signal
 from . import OETestDecorator, registerDecorator
+
+import signal
+from threading import Timer
+
+from oeqa.core.threaded import OETestRunnerThreaded
 from oeqa.core.exception import OEQATimeoutError
 
 @registerDecorator
@@ -10,16 +14,32 @@ class OETimeout(OETestDecorator):
     attrs = ('oetimeout',)
 
     def setUpDecorator(self):
-        timeout = self.oetimeout
-        def _timeoutHandler(signum, frame):
-            raise OEQATimeoutError("Timed out after %s "
+        self.logger.debug("Setting up a %d second(s) timeout" % self.oetimeout)
+
+        if isinstance(self.case.tc.runner, OETestRunnerThreaded):
+            self.timeouted = False
+            def _timeoutHandler():
+                self.timeouted = True
+
+            self.timer = Timer(self.oetimeout, _timeoutHandler)
+            self.timer.start()
+        else:
+            timeout = self.oetimeout
+            def _timeoutHandler(signum, frame):
+                raise OEQATimeoutError("Timed out after %s "
                     "seconds of execution" % timeout)
 
-        self.logger.debug("Setting up a %d second(s) timeout" % self.oetimeout)
-        self.alarmSignal = signal.signal(signal.SIGALRM, _timeoutHandler)
-        signal.alarm(self.oetimeout)
+            self.alarmSignal = signal.signal(signal.SIGALRM, _timeoutHandler)
+            signal.alarm(self.oetimeout)
 
     def tearDownDecorator(self):
-        signal.alarm(0)
-        signal.signal(signal.SIGALRM, self.alarmSignal)
-        self.logger.debug("Removed SIGALRM handler")
+        if isinstance(self.case.tc.runner, OETestRunnerThreaded):
+            self.timer.cancel()
+            self.logger.debug("Removed Timer handler")
+            if self.timeouted:
+                raise OEQATimeoutError("Timed out after %s "
+                    "seconds of execution" % self.oetimeout)
+        else:
+            signal.alarm(0)
+            signal.signal(signal.SIGALRM, self.alarmSignal)
+            self.logger.debug("Removed SIGALRM handler")
-- 
2.1.4