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