gdb/testsuite/gdb.perf/gmonster-ptype-string.py

   1 # Copyright (C) 2015-2021 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 # Measure speed of ptype of a std::string object.
  17 # The difference between this test and gmonster-print-cerr.py is that
  18 # here we are working with fully expanded symtabs.  GDB searches
  19 # these before it searches the index (there is work-in-progress to fix this),
  20 # this test helps measure the issue.
  21
  22 from perftest import perftest
  23 from perftest import measure
  24 from perftest import utils
  25
  26
  27 class GmonsterPtypeString(perftest.TestCaseWithBasicMeasurements):
  28     def __init__(self, name, run_names, binfile):
  29         super(GmonsterPtypeString, self).__init__(name)
  30         self.run_names = run_names
  31         self.binfile = binfile
  32
  33     def warm_up(self):
  34         pass
  35
  36     def execute_test(self):
  37         for run in self.run_names:
  38             this_run_binfile = "%s-%s" % (self.binfile, utils.convert_spaces(run))
  39             utils.select_file(this_run_binfile)
  40             utils.runto_main()
  41             utils.safe_execute("mt expand-symtabs")
  42             iteration = 5
  43             while iteration > 0:
  44                 utils.safe_execute("mt flush symbol-cache")
  45                 func1 = lambda: utils.safe_execute("ptype hello")
  46                 func = lambda: utils.run_n_times(2, func1)
  47                 self.measure.measure(func, run)
  48                 iteration -= 1