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cce0e923 DE |
1 | # Copyright (C) 2016 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 single-stepping | |
17 | # with skip directives active. There's no need to test skip directives that | |
18 | # match functions we're stepping through. That's not the interesting case. | |
19 | # The interesting case is where there are 100s or more classes or libraries, | |
20 | # each providing their own set of skip directives. | |
21 | # | |
22 | # Parameters: | |
23 | # SKIP_STEP_COUNT: the number of single steps GDB performs | |
24 | # SKIP_DIRECTIVE_COUNT: the number of skip directives to create | |
25 | ||
26 | load_lib perftest.exp | |
27 | ||
28 | if [skip_perf_tests] { | |
29 | return 0 | |
30 | } | |
31 | ||
32 | standard_testfile .cc skip-funcs.cc | |
33 | set executable $testfile | |
34 | set skip_func_file [standard_output_file $srcfile2] | |
35 | set expfile $testfile.exp | |
36 | ||
37 | # make check-perf RUNTESTFLAGS='skip-command.exp SKIP_STEP_COUNT=1000 ...' | |
38 | if ![info exists SKIP_STEP_COUNT] { | |
39 | set SKIP_STEP_COUNT 1000 | |
40 | } | |
41 | if ![info exists SKIP_DIRECTIVE_COUNT] { | |
42 | set SKIP_DIRECTIVE_COUNT 1000 | |
43 | } | |
44 | ||
45 | proc delete_all_skips { } { | |
46 | # FIXME: skip currently doesn't ask for confirmation | |
47 | # FIXME: "skip delete" with no skips -> | |
48 | # "No skiplist entries found with number (null)." | |
49 | gdb_test_no_output "set confirm off" | |
50 | gdb_test "skip delete" "" | |
51 | gdb_test_no_output "set confirm on" | |
52 | } | |
53 | ||
54 | proc install_skips { kind text nr_skips } { | |
55 | global gdb_prompt | |
56 | set test "install_skips" | |
57 | delete_all_skips | |
58 | switch $kind { | |
59 | "function" { set skip_arg "-function" } | |
60 | "regexp" { set skip_arg "-rfunction" } | |
61 | default { | |
62 | perror "bad skip kind: $kind" | |
63 | return | |
64 | } | |
65 | } | |
66 | for { set i 0 } { $i < $nr_skips } { incr i } { | |
67 | gdb_test "skip $skip_arg [format $text $i]" "" | |
68 | } | |
69 | # There could be 1000's of these, which can overflow the buffer. | |
70 | # However, it's good to have this in the log, so we go to the effort | |
71 | # to read it all in. | |
72 | gdb_test_multiple "info skip" $test { | |
73 | -re "\[^\r\n\]*\r\n" { exp_continue } | |
74 | -re "\[\r\n\]*$gdb_prompt $" { | |
75 | pass $test | |
76 | } | |
77 | timeout { | |
78 | fail "$test (timeout)" | |
79 | } | |
80 | } | |
81 | } | |
82 | ||
83 | proc write_skip_func_source { file_name func_name_prefix nr_funcs } { | |
84 | set f [open $file_name "w"] | |
85 | puts $f "// DO NOT EDIT, machine generated file. See skip-command.exp." | |
86 | for { set i 0 } { $i < $nr_funcs } { incr i } { | |
87 | set func_name [format "${func_name_prefix}_%02d" $i] | |
88 | puts $f "int $func_name () { return 0; }" | |
89 | } | |
90 | close $f | |
91 | } | |
92 | ||
93 | proc run_skip_bench { kind text } { | |
94 | global SKIP_STEP_COUNT SKIP_DIRECTIVE_COUNT | |
95 | ||
96 | if ![runto_main] { | |
97 | fail "Can't run to main" | |
98 | return -1 | |
99 | } | |
100 | ||
101 | gdb_test_no_output "set variable flag = 1" | |
102 | ||
103 | for { set i 0 } { $i < 5 } { incr i } { | |
104 | set nr_skips [expr $i * $SKIP_DIRECTIVE_COUNT] | |
105 | install_skips $kind $text $nr_skips | |
106 | gdb_test_no_output "python SkipCommand\(\"skip-$kind-$nr_skips\", ${SKIP_STEP_COUNT}\).run()" | |
107 | } | |
108 | ||
109 | gdb_test "set variable flag = 0" | |
110 | } | |
111 | ||
112 | PerfTest::assemble { | |
113 | global srcdir subdir srcfile binfile skip_func_file | |
114 | global SKIP_DIRECTIVE_COUNT | |
115 | ||
116 | write_skip_func_source $skip_func_file "skip_func" [expr 4 * $SKIP_DIRECTIVE_COUNT] | |
117 | if { [gdb_compile [list "$srcdir/$subdir/$srcfile" $skip_func_file] ${binfile} executable {c++ debug}] != "" } { | |
118 | return -1 | |
119 | } | |
120 | return 0 | |
121 | } { | |
122 | global binfile | |
123 | clean_restart $binfile | |
124 | return 0 | |
125 | } { | |
126 | global SKIP_STEP_COUNT SKIP_DIRECTIVE_COUNT | |
127 | ||
128 | with_test_prefix "time_skip_func" { | |
129 | # N.B. The function name must match the ones in skip-command.cc. | |
130 | run_skip_bench "function" "skip_func_%02d" | |
131 | } | |
132 | ||
133 | with_test_prefix "time_skip_constructor" { | |
134 | run_skip_bench "regexp" "^(skip_class_%02d)::\\1 *\\(" | |
135 | } | |
136 | ||
137 | return 0 | |
138 | } |