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tests: Fix trace parameter invocation

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If trace-cmd command does not exist, run-tests.py could end up hanging
in a loop waiting for input. Fix this simply by checking whether the
trace-cmd command can be executed sucessfully and exiting the script if
not.

Signed-off-by: Eduardo Abinader <eduardo.abinader@openbossa.org>
This commit is contained in:
Eduardo Abinader 2014-02-25 17:27:03 -04:00 committed by Jouni Malinen
parent 1d91f504e4
commit b5008c2c2d
1 changed files with 5 additions and 1 deletions
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6
tests/hwsim/run-tests.py
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@ -108,8 +108,12 @@ class DataCollector(object):
stderr=open('/dev/null', 'w'),
cwd=self._logdir)
l = self._trace_cmd.stdout.read(7)
while not 'STARTED' in l:
while self._trace_cmd.poll() is None and not 'STARTED' in l:
l += self._trace_cmd.stdout.read(1)
res = self._trace_cmd.returncode
if res:
print "Failed calling trace-cmd: returned exit status %d" % res
sys.exit(1)
def __exit__(self, type, value, traceback):
if self._tracing:
self._trace_cmd.stdin.write('DONE\n')