gdb/testsuite/gdb.perf/backtrace.exp

   1 # Copyright (C) 2013-2021 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 performance of GDB doing stack
  17 # backtrace.
  18 # There is one parameter in this test:
  19 #  - BACKTRACE_DEPTH is the number of innermost frames that command
  20 #    'bt' prints.
  21
  22 load_lib perftest.exp
  23
  24 if [skip_perf_tests] {
  25     return 0
  26 }
  27
  28 standard_testfile .c
  29 set executable $testfile
  30 set expfile $testfile.exp
  31
  32 # make check-perf RUNTESTFLAGS='backtrace.exp BACKTRACE_DEPTH=1024'
  33 if ![info exists BACKTRACE_DEPTH] {
  34     set BACKTRACE_DEPTH 64
  35 }
  36
  37 PerfTest::assemble {
  38     global BACKTRACE_DEPTH
  39     global srcdir subdir srcfile
  40
  41     set compile_flags {debug}
  42     lappend compile_flags "additional_flags=-DBACKTRACE_DEPTH=${BACKTRACE_DEPTH}"
  43
  44     if { [gdb_compile "$srcdir/$subdir/$srcfile" ${binfile} executable $compile_flags] != ""} {
  45         return -1
  46     }
  47
  48     return 0
  49 } {
  50     global binfile
  51
  52     clean_restart $binfile
  53
  54     if ![runto_main] {
  55         fail "can't run to main"
  56         return -1
  57     }
  58
  59     gdb_breakpoint "fun2"
  60     gdb_continue_to_breakpoint "fun2"
  61
  62     return 0
  63 } {
  64     global BACKTRACE_DEPTH
  65
  66     gdb_test "python BackTrace\($BACKTRACE_DEPTH\).run()"
  67
  68     return 0
  69 }