configs/common/SimpleOpts.py

   1 # -*- coding: utf-8 -*-
   2 # Copyright (c) 2015 Jason Power
   3 # All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions are
   7 # met: redistributions of source code must retain the above copyright
   8 # notice, this list of conditions and the following disclaimer;
   9 # redistributions in binary form must reproduce the above copyright
  10 # notice, this list of conditions and the following disclaimer in the
  11 # documentation and/or other materials provided with the distribution;
  12 # neither the name of the copyright holders nor the names of its
  13 # contributors may be used to endorse or promote products derived from
  14 # this software without specific prior written permission.
  15 #
  16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  19 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27
  28 from __future__ import print_function
  29 from __future__ import absolute_import
  30
  31 """ Options wrapper for simple gem5 configuration scripts
  32
  33 This module wraps the optparse class so that we can register options
  34 from each class instead of only from the configuration script.
  35
  36 """
  37
  38 # Module-level variable to track if we've called the parse_args function yet
  39 called_parse_args = False
  40
  41 # For fatal
  42 import m5
  43
  44 # import the options parser
  45 from optparse import OptionParser
  46
  47 # add the options we want to be able to control from the command line
  48 parser = OptionParser()
  49
  50 def add_option(*args, **kwargs):
  51     """Call "add_option" to the global options parser
  52     """
  53
  54     if (parser.has_option(args[0]) or
  55             (len(args) > 1 and parser.has_option(args[1])) ):
  56         m5.fatal("Duplicate option: %s" % str(args))
  57
  58     if called_parse_args:
  59         m5.fatal("Can't add an option after calling SimpleOpts.parse_args")
  60
  61     parser.add_option(*args, **kwargs)
  62
  63 def parse_args():
  64     global called_parse_args
  65     called_parse_args = True
  66
  67     return parser.parse_args()
  68
  69 def set_usage(*args, **kwargs):
  70     parser.set_usage(*args, **kwargs)
  71
  72 def print_help(*args, **kwargs):
  73     parser.print_help(*args, **kwargs)
  74