gdb/testsuite/gdb.threads/multiple-step-overs.exp

   1 # Copyright (C) 2011-2024 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 # Test that GDB steps over all breakpoints of threads not the stepping
  17 # thread, before actually proceeding with the stepped thread.
  18
  19 standard_testfile
  20 set executable ${testfile}
  21
  22 require {!target_info exists gdb,nosignals}
  23
  24 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
  25          executable [list debug "incdir=${objdir}"]] != "" } {
  26     return -1
  27 }
  28
  29 # Prepare environment for test.
  30
  31 proc setup {} {
  32     global executable
  33     global displaced
  34
  35     with_test_prefix "setup" {
  36         clean_restart $executable
  37
  38         if ![runto_main] {
  39             return -1
  40         }
  41
  42         gdb_test_no_output "set displaced-stepping $displaced"
  43
  44         gdb_breakpoint [gdb_get_line_number "set wait-threads breakpoint here"]
  45         gdb_continue_to_breakpoint "run to breakpoint"
  46         gdb_test "info threads" "\\\* 1 .* 2 .* 3 .*" "info threads shows all threads"
  47
  48         gdb_test_no_output "set scheduler-locking on"
  49
  50         gdb_breakpoint [gdb_get_line_number "set breakpoint thread 3 here"]
  51         gdb_breakpoint [gdb_get_line_number "set breakpoint thread 2 here"]
  52
  53         gdb_test "thread 3" "Switching.*"
  54         gdb_continue_to_breakpoint "run to breakpoint in thread 3"
  55         gdb_test "p *myp = 0" " = 0" "unbreak loop in thread 3"
  56
  57         gdb_test "thread 2" "Switching.*"
  58         gdb_continue_to_breakpoint "run to breakpoint in thread 2"
  59         gdb_test "p *myp = 0" " = 0" "unbreak loop in thread 2"
  60
  61         # Disable scheduler locking.
  62         gdb_test_no_output "set scheduler-locking off"
  63
  64         # Now all 3 threads are stopped for a breakpoint that needs to
  65         # be stepped over before thread 1 is resumed.
  66     }
  67 }
  68
  69 foreach displaced { "off" "on" } {
  70     with_test_prefix "displaced=$displaced" {
  71         with_test_prefix "step" {
  72             setup
  73             gdb_test "thread 1" "Switching.*"
  74             gdb_test "step" "in wait_threads .*"
  75         }
  76
  77         with_test_prefix "next" {
  78             setup
  79             gdb_test "thread 1" "Switching.*"
  80             gdb_test "next" "pthread_join.*"
  81         }
  82
  83         with_test_prefix "continue" {
  84             setup
  85             gdb_breakpoint [gdb_get_line_number "EXIT_SUCCESS"]
  86             gdb_test "thread 1" "Switching.*"
  87             gdb_test "continue" "EXIT_SUCCESS.*"
  88         }
  89
  90         # Try continuing with a queued signal in each of the threads
  91         # (one at a time).  Should stop at the signal handler, instead
  92         # of re-trapping the breakpoint the threads were already
  93         # stopped at.
  94         foreach thread {1 2 3} {
  95             with_test_prefix "signal thr$thread" {
  96                 setup
  97
  98                 # Queue a signal in THREAD.
  99                 gdb_test "thread $thread" "Switching.*"
 100                 gdb_test_no_output "queue-signal SIGUSR1"
 101
 102                 # Switch back to thread 1, and continue.
 103                 gdb_test "thread 1" "Switching.*" "switch back to thread 1"
 104                 gdb_breakpoint "sigusr1_handler" "set break at sigusr1_handler"
 105
 106                 set msg "continue to sigusr1_handler"
 107                 gdb_test_multiple "continue" $msg {
 108                     -re "Breakpoint .* sigusr1_handler .*$gdb_prompt $" {
 109                         pass $msg
 110                     }
 111                     -re "Breakpoint .*$gdb_prompt $" {
 112                         if {![can_single_step_to_signal_handler]
 113                             && $thread != 1 && $displaced == "off"} {
 114                             setup_kfail "gdb/18214" "*-*-*"
 115                         }
 116                         fail $msg
 117                     }
 118                 }
 119             }
 120         }
 121     }
 122 }