Adding the tools directory to the git export.
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
new file mode 100755
index 0000000..ee61f33
--- /dev/null
+++ b/tools/run_tests/run_tests.py
@@ -0,0 +1,49 @@
+#!/usr/bin/python
+"""Run tests in parallel."""
+
+import argparse
+import glob
+import itertools
+import multiprocessing
+import sys
+
+import jobset
+
+# flags required for make for each configuration
+_CONFIGS = ['dbg', 'opt', 'tsan', 'msan', 'asan']
+
+# parse command line
+argp = argparse.ArgumentParser(description='Run grpc tests.')
+argp.add_argument('-c', '--config',
+ choices=['all'] + _CONFIGS,
+ nargs='+',
+ default=['all'])
+argp.add_argument('-t', '--test-filter', nargs='*', default=['*'])
+argp.add_argument('-n', '--runs_per_test', default=1, type=int)
+args = argp.parse_args()
+
+# grab config
+configs = [cfg
+ for cfg in itertools.chain.from_iterable(
+ _CONFIGS if x == 'all' else [x]
+ for x in args.config)]
+filters = args.test_filter
+runs_per_test = args.runs_per_test
+
+# build latest, sharing cpu between the various makes
+if not jobset.run(
+ ['make',
+ '-j', '%d' % max(multiprocessing.cpu_count() / len(configs), 1),
+ 'buildtests_c',
+ 'CONFIG=%s' % cfg]
+ for cfg in configs):
+ sys.exit(1)
+
+# run all the tests
+jobset.run([x]
+ for x in itertools.chain.from_iterable(
+ itertools.chain.from_iterable(itertools.repeat(
+ glob.glob('bins/%s/%s_test' % (config, filt)),
+ runs_per_test))
+ for config in configs
+ for filt in filters))