68 lines
2.5 KiB
Python
68 lines
2.5 KiB
Python
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#!/usr/bin/env python
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"""
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compare_bench.py - Compare two benchmarks or their results and report the
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difference.
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"""
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import argparse
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from argparse import ArgumentParser
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import sys
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import gbench
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from gbench import util, report
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from gbench.util import *
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def check_inputs(in1, in2, flags):
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"""
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Perform checking on the user provided inputs and diagnose any abnormalities
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"""
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in1_kind, in1_err = classify_input_file(in1)
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in2_kind, in2_err = classify_input_file(in2)
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output_file = find_benchmark_flag('--benchmark_out=', flags)
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output_type = find_benchmark_flag('--benchmark_out_format=', flags)
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if in1_kind == IT_Executable and in2_kind == IT_Executable and output_file:
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print(("WARNING: '--benchmark_out=%s' will be passed to both "
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"benchmarks causing it to be overwritten") % output_file)
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if in1_kind == IT_JSON and in2_kind == IT_JSON and len(flags) > 0:
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print("WARNING: passing --benchmark flags has no effect since both "
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"inputs are JSON")
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if output_type is not None and output_type != 'json':
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print(("ERROR: passing '--benchmark_out_format=%s' to 'compare_bench.py`"
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" is not supported.") % output_type)
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sys.exit(1)
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def main():
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parser = ArgumentParser(
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description='compare the results of two benchmarks')
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parser.add_argument(
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'test1', metavar='test1', type=str, nargs=1,
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help='A benchmark executable or JSON output file')
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parser.add_argument(
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'test2', metavar='test2', type=str, nargs=1,
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help='A benchmark executable or JSON output file')
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parser.add_argument(
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'benchmark_options', metavar='benchmark_options', nargs=argparse.REMAINDER,
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help='Arguments to pass when running benchmark executables'
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)
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args, unknown_args = parser.parse_known_args()
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# Parse the command line flags
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test1 = args.test1[0]
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test2 = args.test2[0]
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if unknown_args:
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# should never happen
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print("Unrecognized positional argument arguments: '%s'"
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% unknown_args)
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exit(1)
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benchmark_options = args.benchmark_options
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check_inputs(test1, test2, benchmark_options)
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# Run the benchmarks and report the results
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json1 = gbench.util.run_or_load_benchmark(test1, benchmark_options)
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json2 = gbench.util.run_or_load_benchmark(test2, benchmark_options)
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output_lines = gbench.report.generate_difference_report(json1, json2)
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print('Comparing %s to %s' % (test1, test2))
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for ln in output_lines:
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print(ln)
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if __name__ == '__main__':
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main()
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