lldb/packages/Python/lldbsuite/test/bench.py

   1 #!/usr/bin/env python
   2
   3 """
   4 A simple bench runner which delegates to the ./dotest.py test driver to run the
   5 benchmarks defined in the list named 'benches'.
   6
   7 You need to hand edit 'benches' to modify/change the command lines passed to the
   8 test driver.
   9
  10 Use the following to get only the benchmark results in your terminal output:
  11
  12     ./bench.py -e /Volumes/data/lldb/svn/regression/build/Debug/lldb -x '-F Driver::MainLoop()' 2>&1 | grep -P '^lldb.*benchmark:'
  13 """
  14
  15 import os
  16 from optparse import OptionParser
  17
  18 # dotest.py invocation with no '-e exe-path' uses lldb as the inferior program,
  19 # unless there is a mentioning of custom executable program.
  20 benches = [
  21     # Measure startup delays creating a target, setting a breakpoint, and run
  22     # to breakpoint stop.
  23     "./dotest.py -v +b %E %X -n -p TestStartupDelays.py",
  24     # Measure 'frame variable' response after stopping at a breakpoint.
  25     "./dotest.py -v +b %E %X -n -p TestFrameVariableResponse.py",
  26     # Measure stepping speed after stopping at a breakpoint.
  27     "./dotest.py -v +b %E %X -n -p TestSteppingSpeed.py",
  28     # Measure expression cmd response with a simple custom executable program.
  29     "./dotest.py +b -n -p TestExpressionCmd.py",
  30     # Attach to a spawned process then run disassembly benchmarks.
  31     "./dotest.py -v +b -n %E -p TestDoAttachThenDisassembly.py",
  32 ]
  33
  34
  35 def main():
  36     """Read the items from 'benches' and run the command line one by one."""
  37     parser = OptionParser(
  38         usage="""\
  39 %prog [options]
  40 Run the standard benchmarks defined in the list named 'benches'.\
  41 """
  42     )
  43     parser.add_option(
  44         "-e",
  45         "--executable",
  46         type="string",
  47         action="store",
  48         dest="exe",
  49         help="The target program launched by lldb.",
  50     )
  51     parser.add_option(
  52         "-x",
  53         "--breakpoint-spec",
  54         type="string",
  55         action="store",
  56         dest="break_spec",
  57         help="The lldb breakpoint spec for the target program.",
  58     )
  59
  60     # Parses the options, if any.
  61     opts, args = parser.parse_args()
  62
  63     print("Starting bench runner....")
  64
  65     for item in benches:
  66         command = item.replace("%E", '-e "%s"' % opts.exe if opts.exe else "")
  67         command = command.replace(
  68             "%X", '-x "%s"' % opts.break_spec if opts.break_spec else ""
  69         )
  70         print("Running %s" % (command))
  71         os.system(command)
  72
  73     print("Bench runner done.")
  74
  75
  76 if __name__ == "__main__":
  77     main()