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 from __future__ import print_function
  16 from __future__ import absolute_import
  17
  18 import os
  19 from optparse import OptionParser
  20
  21 # dotest.py invocation with no '-e exe-path' uses lldb as the inferior program,
  22 # unless there is a mentioning of custom executable program.
  23 benches = [
  24     # Measure startup delays creating a target, setting a breakpoint, and run
  25     # to breakpoint stop.
  26     './dotest.py -v +b %E %X -n -p TestStartupDelays.py',
  27
  28     # Measure 'frame variable' response after stopping at a breakpoint.
  29     './dotest.py -v +b %E %X -n -p TestFrameVariableResponse.py',
  30
  31     # Measure stepping speed after stopping at a breakpoint.
  32     './dotest.py -v +b %E %X -n -p TestSteppingSpeed.py',
  33
  34     # Measure expression cmd response with a simple custom executable program.
  35     './dotest.py +b -n -p TestExpressionCmd.py',
  36
  37     # Attach to a spawned process then run disassembly benchmarks.
  38     './dotest.py -v +b -n %E -p TestDoAttachThenDisassembly.py'
  39 ]
  40
  41
  42 def main():
  43     """Read the items from 'benches' and run the command line one by one."""
  44     parser = OptionParser(usage="""\
  45 %prog [options]
  46 Run the standard benchmarks defined in the list named 'benches'.\
  47 """)
  48     parser.add_option('-e', '--executable',
  49                       type='string', action='store',
  50                       dest='exe',
  51                       help='The target program launched by lldb.')
  52     parser.add_option('-x', '--breakpoint-spec',
  53                       type='string', action='store',
  54                       dest='break_spec',
  55                       help='The lldb breakpoint spec for the target program.')
  56
  57     # Parses the options, if any.
  58     opts, args = parser.parse_args()
  59
  60     print("Starting bench runner....")
  61
  62     for item in benches:
  63         command = item.replace('%E',
  64                                '-e "%s"' % opts.exe if opts.exe else '')
  65         command = command.replace('%X', '-x "%s"' %
  66                                   opts.break_spec if opts.break_spec else '')
  67         print("Running %s" % (command))
  68         os.system(command)
  69
  70     print("Bench runner done.")
  71
  72 if __name__ == '__main__':
  73     main()