6dbb67982c
This patch is to add a test case to on the performance of GDB handling load and unload of shared library. In V4: - Handle malloc and dlopen failure, - Document test parameters. In V3, there are some changes, - Adapt to perf test framework changes. - Measure load and unload separately. In V2, there are some changes, - A new proc gdb_produce_source to produce source files. I tried to move all source file generation code out of solib.exp, but compilation step still needs to know the generated file names. I have to hard-code the file names in compilation step, which is not good to me, so I give up on this moving. - SOLIB_NUMBER -> SOLIB_COUNT - New variable SOLIB_DLCLOSE_REVERSED_ORDER to control the order of iterating a list of shared libs to dlclose them. - New variable GDB_PERFORMANCE to enable these perf test cases. - Remove dlsym call in solib.c. - Update solib.py for the updated framework. gdb/testsuite/ * lib/gdb.exp (gdb_produce_source): New procedure. * gdb.perf/solib.c: New. * gdb.perf/solib.exp: New. * gdb.perf/solib.py: New.
73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
# Copyright (C) 2013 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This test case is to test the speed of GDB when it is handling the
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# shared libraries of inferior are loaded and unloaded.
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from perftest import perftest
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from perftest import measure
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class SolibLoadUnload1(perftest.TestCaseWithBasicMeasurements):
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def __init__(self, solib_count, measure_load):
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if measure_load:
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name = "solib_load"
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else:
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name = "solib_unload"
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# We want to measure time in this test.
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super (SolibLoadUnload1, self).__init__ (name)
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self.solib_count = solib_count
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self.measure_load = measure_load
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def warm_up(self):
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do_test_load = "call do_test_load (%d)" % self.solib_count
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do_test_unload = "call do_test_unload (%d)" % self.solib_count
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gdb.execute(do_test_load)
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gdb.execute(do_test_unload)
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def execute_test(self):
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num = self.solib_count
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iteration = 5;
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while num > 0 and iteration > 0:
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# Do inferior calls to do_test_load and do_test_unload in pairs,
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# but measure differently.
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if self.measure_load:
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do_test_load = "call do_test_load (%d)" % num
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func = lambda: gdb.execute (do_test_load)
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self.measure.measure(func, num)
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do_test_unload = "call do_test_unload (%d)" % num
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gdb.execute (do_test_unload)
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else:
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do_test_load = "call do_test_load (%d)" % num
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gdb.execute (do_test_load)
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do_test_unload = "call do_test_unload (%d)" % num
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func = lambda: gdb.execute (do_test_unload)
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self.measure.measure(func, num)
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num = num / 2
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iteration -= 1
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class SolibLoadUnload(object):
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def __init__(self, solib_count):
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self.solib_count = solib_count;
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def run(self):
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SolibLoadUnload1(self.solib_count, True).run()
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SolibLoadUnload1(self.solib_count, False).run()
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