bisect_hang.py: introduced a maximum run time factor (default: 1.3)

Author: firewave

tools/bisect/bisect_hang.py

@@ -4,6 +4,8 @@
 
 from bisect_common import *
 
+MAX_RT_FACTOR = 1.3
+
 # TODO: detect missing file
 def run(cppcheck_path, options, elapsed_time=None):
     timeout = None
@@ -85,4 +87,7 @@ def run(cppcheck_path, options, elapsed_time=None):
 run_time_factor = run_time / elapsed_time
 print('run_time_factor: {}'.format(run_time_factor))
 
+if run_time_factor >= MAX_RT_FACTOR:
+    sys.exit(EC_BAD if not invert else EC_GOOD)  # factor exceeded
+
 sys.exit(EC_GOOD if not invert else EC_BAD)  # no timeout