| # Copyright (C) 2016-2021 Free Software Foundation, Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| # This test case is to test the speed of GDB when it is single-stepping |
| # with skip directives active. There's no need to test skip directives that |
| # match functions we're stepping through. That's not the interesting case. |
| # The interesting case is where there are 100s or more classes or libraries, |
| # each providing their own set of skip directives. |
| # |
| # Parameters: |
| # SKIP_STEP_COUNT: the number of single steps GDB performs |
| # SKIP_DIRECTIVE_COUNT: the number of skip directives to create |
| |
| load_lib perftest.exp |
| |
| if [skip_perf_tests] { |
| return 0 |
| } |
| |
| standard_testfile .cc skip-funcs.cc |
| set executable $testfile |
| set skip_func_file [standard_output_file $srcfile2] |
| set expfile $testfile.exp |
| |
| # make check-perf RUNTESTFLAGS='skip-command.exp SKIP_STEP_COUNT=1000 ...' |
| if ![info exists SKIP_STEP_COUNT] { |
| set SKIP_STEP_COUNT 1000 |
| } |
| if ![info exists SKIP_DIRECTIVE_COUNT] { |
| set SKIP_DIRECTIVE_COUNT 1000 |
| } |
| |
| proc delete_all_skips { } { |
| # FIXME: skip currently doesn't ask for confirmation |
| # FIXME: "skip delete" with no skips -> |
| # "No skiplist entries found with number (null)." |
| gdb_test_no_output "set confirm off" |
| gdb_test "skip delete" "" |
| gdb_test_no_output "set confirm on" |
| } |
| |
| proc install_skips { kind text nr_skips } { |
| global gdb_prompt |
| set test "install_skips" |
| delete_all_skips |
| switch $kind { |
| "function" { set skip_arg "-function" } |
| "regexp" { set skip_arg "-rfunction" } |
| default { |
| perror "bad skip kind: $kind" |
| return |
| } |
| } |
| for { set i 0 } { $i < $nr_skips } { incr i } { |
| gdb_test "skip $skip_arg [format $text $i]" "" |
| } |
| # There could be 1000's of these, which can overflow the buffer. |
| # However, it's good to have this in the log, so we go to the effort |
| # to read it all in. |
| gdb_test_multiple "info skip" $test { |
| -re "\[^\r\n\]*\r\n" { exp_continue } |
| -re "\[\r\n\]*$gdb_prompt $" { |
| pass $test |
| } |
| timeout { |
| fail "$test (timeout)" |
| } |
| } |
| } |
| |
| proc write_skip_func_source { file_name func_name_prefix nr_funcs } { |
| set f [open $file_name "w"] |
| puts $f "// DO NOT EDIT, machine generated file. See skip-command.exp." |
| for { set i 0 } { $i < $nr_funcs } { incr i } { |
| set func_name [format "${func_name_prefix}_%02d" $i] |
| puts $f "int $func_name () { return 0; }" |
| } |
| close $f |
| } |
| |
| proc run_skip_bench { kind text } { |
| global SKIP_STEP_COUNT SKIP_DIRECTIVE_COUNT |
| |
| if ![runto_main] { |
| return -1 |
| } |
| |
| gdb_test_no_output "set variable flag = 1" |
| |
| for { set i 0 } { $i < 5 } { incr i } { |
| with_test_prefix "iter $i" { |
| set nr_skips [expr $i * $SKIP_DIRECTIVE_COUNT] |
| install_skips $kind $text $nr_skips |
| gdb_test_python_run \ |
| "SkipCommand\(\"skip-$kind-$nr_skips\", ${SKIP_STEP_COUNT}\)" |
| } |
| } |
| |
| gdb_test "set variable flag = 0" |
| } |
| |
| PerfTest::assemble { |
| global srcdir subdir srcfile binfile skip_func_file |
| global SKIP_DIRECTIVE_COUNT |
| |
| write_skip_func_source $skip_func_file "skip_func" [expr 4 * $SKIP_DIRECTIVE_COUNT] |
| if { [gdb_compile [list "$srcdir/$subdir/$srcfile" $skip_func_file] ${binfile} executable {c++ debug}] != "" } { |
| return -1 |
| } |
| return 0 |
| } { |
| global binfile |
| clean_restart $binfile |
| return 0 |
| } { |
| global SKIP_STEP_COUNT SKIP_DIRECTIVE_COUNT |
| |
| with_test_prefix "time_skip_func" { |
| # N.B. The function name must match the ones in skip-command.cc. |
| run_skip_bench "function" "skip_func_%02d" |
| } |
| |
| with_test_prefix "time_skip_constructor" { |
| run_skip_bench "regexp" "^(skip_class_%02d)::\\1 *\\(" |
| } |
| |
| return 0 |
| } |