gdb/testsuite/gdb.perf/gmonster-null-lookup.py

   1 # Copyright (C) 2015-2017 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Test handling of lookup of a symbol that doesn't exist.
  17 # Efficient handling of this case is important, and not just for typos.
  18 # Sometimes the debug info for the needed object isn't present.
  19
  20 from perftest import perftest
  21 from perftest import measure
  22 from perftest import utils
  23
  24 class NullLookup(perftest.TestCaseWithBasicMeasurements):
  25     def __init__(self, name, run_names, binfile):
  26         # We want to measure time in this test.
  27         super(NullLookup, self).__init__(name)
  28         self.run_names = run_names
  29         self.binfile = binfile
  30
  31     def warm_up(self):
  32         pass
  33
  34     def execute_test(self):
  35         for run in self.run_names:
  36             this_run_binfile = "%s-%s" % (self.binfile,
  37                                           utils.convert_spaces(run))
  38             utils.select_file(this_run_binfile)
  39             utils.runto_main()
  40             utils.safe_execute("mt expand-symtabs")
  41             iteration = 5
  42             while iteration > 0:
  43                 utils.safe_execute("mt flush-symbol-cache")
  44                 func = lambda: utils.safe_execute("p symbol_not_found")
  45                 self.measure.measure(func, run)
  46                 iteration -= 1