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

   1 # Copyright (C) 2015-2022 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
  25 class NullLookup(perftest.TestCaseWithBasicMeasurements):
  26     def __init__(self, name, run_names, binfile):
  27         # We want to measure time in this test.
  28         super(NullLookup, self).__init__(name)
  29         self.run_names = run_names
  30         self.binfile = binfile
  31
  32     def warm_up(self):
  33         pass
  34
  35     def execute_test(self):
  36         for run in self.run_names:
  37             this_run_binfile = "%s-%s" % (self.binfile, 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