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.
87 lines
2.4 KiB
Text
87 lines
2.4 KiB
Text
# 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 performance of GDB when it is handling
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# the shared libraries of inferior are loaded and unloaded.
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# There are two parameters in this test:
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# - SOLIB_COUNT is the number of shared libraries program will load
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# and unload
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# - SOLIB_DLCLOSE_REVERSED_ORDER controls the order of dlclose shared
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# libraries. If it is set, program dlclose shared libraries in a
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# reversed order of loading.
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load_lib perftest.exp
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if [skip_perf_tests] {
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return 0
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}
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standard_testfile .c
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set executable $testfile
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set expfile $testfile.exp
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# make check-perf RUNTESTFLAGS='solib.exp SOLIB_COUNT=1024'
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if ![info exists SOLIB_COUNT] {
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set SOLIB_COUNT 128
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}
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PerfTest::assemble {
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global SOLIB_COUNT
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global srcdir subdir srcfile binfile
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for {set i 0} {$i < $SOLIB_COUNT} {incr i} {
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# Produce source files.
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set libname "solib-lib$i"
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set src [standard_output_file $libname.c]
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set exe [standard_output_file $libname]
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gdb_produce_source $src "int shr$i (void) {return 0;}"
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# Compile.
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if { [gdb_compile_shlib $src $exe {debug}] != "" } {
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return -1
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}
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# Delete object files to save some space.
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file delete [standard_output_file "solib-lib$i.c.o"]
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}
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set compile_flags {debug shlib_load}
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global SOLIB_DLCLOSE_REVERSED_ORDER
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if [info exists SOLIB_DLCLOSE_REVERSED_ORDER] {
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lappend compile_flags "additional_flags=-DSOLIB_DLCLOSE_REVERSED_ORDER"
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}
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if { [gdb_compile "$srcdir/$subdir/$srcfile" ${binfile} executable $compile_flags] != "" } {
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return -1
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}
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return 0
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} {
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global binfile
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clean_restart $binfile
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if ![runto_main] {
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fail "Can't run to main"
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return -1
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}
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} {
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global SOLIB_COUNT
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gdb_test_no_output "python SolibLoadUnload\($SOLIB_COUNT\).run()"
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}
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