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lief-agent
49 lines
1.1 KiB
Python
49 lines
1.1 KiB
Python
#!/usr/bin/env python
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"""Benchmark Mach-O parsing with and without dyld info.
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Illustrates how to tune ``lief.MachO.ParserConfig`` to skip the
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(expensive) dyld bindings/exports/rebases parsing, then to re-parse
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with ``full_dyldinfo`` enabled, printing the elapsed time for both
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passes.
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Example:
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$ python macho_parser_tweak.py /usr/bin/ls
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"""
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import argparse
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import sys
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import time
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import lief
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def main() -> int:
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parser = argparse.ArgumentParser(description=__doc__.splitlines()[0])
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parser.add_argument("file", help="Path to a Mach-O binary")
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args = parser.parse_args()
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# Skip the dyld info parsing.
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config = lief.MachO.ParserConfig()
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config.parse_dyld_bindings = False
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config.parse_dyld_exports = False
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config.parse_dyld_rebases = False
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t1 = time.time()
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lief.MachO.parse(args.file, config)
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t2 = time.time()
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print(f"Without dyld info: {t2 - t1:.3f}s")
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# Parse the dyld info.
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config.full_dyldinfo(True)
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t1 = time.time()
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lief.MachO.parse(args.file, config)
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t2 = time.time()
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print(f"With dyld info: {t2 - t1:.3f}s")
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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