gdb/testsuite/gdb.perf/solib.py

   1 # Copyright (C) 2013-2024 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 # This test case is to test the speed of GDB when it is handling the
  17 # shared libraries of inferior are loaded and unloaded.
  18
  19 from perftest import measure, perftest
  20
  21
  22 class SolibLoadUnload1(perftest.TestCaseWithBasicMeasurements):
  23     def __init__(self, solib_count, measure_load):
  24         if measure_load:
  25             name = "solib_load"
  26         else:
  27             name = "solib_unload"
  28         # We want to measure time in this test.
  29         super(SolibLoadUnload1, self).__init__(name)
  30         self.solib_count = solib_count
  31         self.measure_load = measure_load
  32
  33     def warm_up(self):
  34         do_test_load = "call do_test_load (%d)" % self.solib_count
  35         do_test_unload = "call do_test_unload (%d)" % self.solib_count
  36         gdb.execute(do_test_load)
  37         gdb.execute(do_test_unload)
  38
  39     def execute_test(self):
  40         num = self.solib_count
  41         iteration = 5
  42
  43         while num > 0 and iteration > 0:
  44             # Do inferior calls to do_test_load and do_test_unload in pairs,
  45             # but measure differently.
  46             if self.measure_load:
  47                 do_test_load = "call do_test_load (%d)" % num
  48                 func = lambda: gdb.execute(do_test_load)
  49
  50                 self.measure.measure(func, num)
  51
  52                 do_test_unload = "call do_test_unload (%d)" % num
  53                 gdb.execute(do_test_unload)
  54
  55             else:
  56                 do_test_load = "call do_test_load (%d)" % num
  57                 gdb.execute(do_test_load)
  58
  59                 do_test_unload = "call do_test_unload (%d)" % num
  60                 func = lambda: gdb.execute(do_test_unload)
  61
  62                 self.measure.measure(func, num)
  63
  64             num = num / 2
  65             iteration -= 1
  66
  67
  68 class SolibLoadUnload(object):
  69     def __init__(self, solib_count):
  70         self.solib_count = solib_count
  71
  72     def run(self):
  73         SolibLoadUnload1(self.solib_count, True).run()
  74         SolibLoadUnload1(self.solib_count, False).run()