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

   1 # Copyright (C) 2011-2023 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 if [target_info exists gdb,nosignals] {
  23     verbose "Skipping ${testfile}.exp because of nosignals."
  24     return -1
  25 }
  26
  27 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
  28          executable [list debug "incdir=${objdir}"]] != "" } {
  29     return -1
  30 }
  31
  32 # Prepare environment for test.
  33
  34 proc setup {} {
  35     global executable
  36     global displaced
  37
  38     with_test_prefix "setup" {
  39         clean_restart $executable
  40
  41         if ![runto_main] {
  42             return -1
  43         }
  44
  45         gdb_test_no_output "set displaced-stepping $displaced"
  46
  47         gdb_breakpoint [gdb_get_line_number "set wait-threads breakpoint here"]
  48         gdb_continue_to_breakpoint "run to breakpoint"
  49         gdb_test "info threads" "\\\* 1 .* 2 .* 3 .*" "info threads shows all threads"
  50
  51         gdb_test_no_output "set scheduler-locking on"
  52
  53         gdb_breakpoint [gdb_get_line_number "set breakpoint thread 3 here"]
  54         gdb_breakpoint [gdb_get_line_number "set breakpoint thread 2 here"]
  55
  56         gdb_test "thread 3" "Switching.*"
  57         gdb_continue_to_breakpoint "run to breakpoint in thread 3"
  58         gdb_test "p *myp = 0" " = 0" "unbreak loop in thread 3"
  59
  60         gdb_test "thread 2" "Switching.*"
  61         gdb_continue_to_breakpoint "run to breakpoint in thread 2"
  62         gdb_test "p *myp = 0" " = 0" "unbreak loop in thread 2"
  63
  64         # Disable scheduler locking.
  65         gdb_test_no_output "set scheduler-locking off"
  66
  67         # Now all 3 threads are stopped for a breakpoint that needs to
  68         # be stepped over before thread 1 is resumed.
  69     }
  70 }
  71
  72 foreach displaced { "off" "on" } {
  73     with_test_prefix "displaced=$displaced" {
  74         with_test_prefix "step" {
  75             setup
  76             gdb_test "thread 1" "Switching.*"
  77             gdb_test "step" "in wait_threads .*"
  78         }
  79
  80         with_test_prefix "next" {
  81             setup
  82             gdb_test "thread 1" "Switching.*"
  83             gdb_test "next" "pthread_join.*"
  84         }
  85
  86         with_test_prefix "continue" {
  87             setup
  88             gdb_breakpoint [gdb_get_line_number "EXIT_SUCCESS"]
  89             gdb_test "thread 1" "Switching.*"
  90             gdb_test "continue" "EXIT_SUCCESS.*"
  91         }
  92
  93         # Try continuing with a queued signal in each of the threads
  94         # (one at a time).  Should stop at the signal handler, instead
  95         # of re-trapping the breakpoint the threads were already
  96         # stopped at.
  97         foreach thread {1 2 3} {
  98             with_test_prefix "signal thr$thread" {
  99                 setup
 100
 101                 # Queue a signal in THREAD.
 102                 gdb_test "thread $thread" "Switching.*"
 103                 gdb_test_no_output "queue-signal SIGUSR1"
 104
 105                 # Switch back to thread 1, and continue.
 106                 gdb_test "thread 1" "Switching.*" "switch back to thread 1"
 107                 gdb_breakpoint "sigusr1_handler" "set break at sigusr1_handler"
 108
 109                 set msg "continue to sigusr1_handler"
 110                 gdb_test_multiple "continue" $msg {
 111                     -re "Breakpoint .* sigusr1_handler .*$gdb_prompt $" {
 112                         pass $msg
 113                     }
 114                     -re "Breakpoint .*$gdb_prompt $" {
 115                         if {![can_single_step_to_signal_handler]
 116                             && $thread != 1 && $displaced == "off"} {
 117                             setup_kfail "gdb/18214" "*-*-*"
 118                         }
 119                         fail $msg
 120                     }
 121                 }
 122             }
 123         }
 124     }
 125 }