cd0a5889d7
This helps lit unit test performance by a lot, especially on windows. The performance gain comes from launching one gtest executable for many subtests instead of one (this is the current situation). The shards are executed by the test runner and the results are stored in the json format supported by the GoogleTest. Later in the test reporting stage, all test results in the json file are retrieved to continue the test results summary etc. On my Win10 desktop, before this patch: `check-clang-unit`: 177s, `check-llvm-unit`: 38s; after this patch: `check-clang-unit`: 37s, `check-llvm-unit`: 11s. On my Linux machine, before this patch: `check-clang-unit`: 46s, `check-llvm-unit`: 8s; after this patch: `check-clang-unit`: 7s, `check-llvm-unit`: 4s. Reviewed By: yln, rnk, abrachet Differential Revision: https://reviews.llvm.org/D122251
67 lines
1.6 KiB
Python
67 lines
1.6 KiB
Python
#!/usr/bin/env python
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import os
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import sys
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if len(sys.argv) == 3 and sys.argv[1] == "--gtest_list_tests":
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if sys.argv[2] != '--gtest_filter=-*DISABLED_*':
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raise ValueError("unexpected argument: %s" % (sys.argv[2]))
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print("""\
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T.
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QuickSubTest
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InfiniteLoopSubTest
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""")
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sys.exit(0)
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elif len(sys.argv) != 1:
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# sharding and json output are specified using environment variables
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raise ValueError("unexpected argument: %r" % (' '.join(sys.argv[1:])))
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for e in ['GTEST_TOTAL_SHARDS', 'GTEST_SHARD_INDEX', 'GTEST_OUTPUT', 'GTEST_FILTER']:
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if e not in os.environ:
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raise ValueError("missing environment variables: " + e)
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if not os.environ['GTEST_OUTPUT'].startswith('json:'):
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raise ValueError("must emit json output: " + os.environ['GTEST_OUTPUT'])
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output = """\
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{
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"testsuites": [
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{
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"name": "T",
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"testsuite": [
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{
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"name": "QuickSubTest",
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"result": "COMPLETED",
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"time": "2s"
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}
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]
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}
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]
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}"""
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dummy_output = """\
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{
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"testsuites": [
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]
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}"""
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json_filename = os.environ['GTEST_OUTPUT'].split(':', 1)[1]
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if os.environ['GTEST_SHARD_INDEX'] == '0':
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test_name = os.environ['GTEST_FILTER']
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if test_name == 'QuickSubTest':
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with open(json_filename, 'w') as f:
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f.write(output)
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exit_code = 0
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elif test_name == 'InfiniteLoopSubTest':
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while True:
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pass
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else:
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raise SystemExit("error: invalid test name: %r" % (test_name,))
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else:
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with open(json_filename, 'w') as f:
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f.write(dummy_output)
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exit_code = 0
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sys.exit(exit_code)
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