| 1 | # Copyright (C) 2014-2020 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: |
| 17 | # |
| 18 | # - setting a breakpoint while a thread is running results in the |
| 19 | # breakpoint being inserted immediately. |
| 20 | # |
| 21 | # - if breakpoint always-inserted mode is off, GDB doesn't remove |
| 22 | # breakpoints from the target when a thread stops, if there are |
| 23 | # still threads running. |
| 24 | |
| 25 | standard_testfile |
| 26 | |
| 27 | if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug pthreads}] == -1} { |
| 28 | return -1 |
| 29 | } |
| 30 | |
| 31 | # The test proper. UPDATE_THREAD_LIST indicates whether we should do |
| 32 | # an "info threads" to sync the thread list after the first stop. |
| 33 | # ALWAYS_INSERTED indicates whether testing in "breakpoint |
| 34 | # always-inserted" mode. NON_STOP indicates whether we're testing in |
| 35 | # non-stop, or all-stop mode. |
| 36 | |
| 37 | proc test { update_thread_list always_inserted non_stop } { |
| 38 | global srcfile binfile |
| 39 | global gdb_prompt |
| 40 | global decimal |
| 41 | |
| 42 | clean_restart $binfile |
| 43 | |
| 44 | gdb_test_no_output "set non-stop $non_stop" |
| 45 | gdb_test_no_output "set breakpoint always-inserted $always_inserted" |
| 46 | |
| 47 | if ![runto_main] { |
| 48 | return -1 |
| 49 | } |
| 50 | |
| 51 | # In all-stop, check whether we're testing with the remote or |
| 52 | # extended-remote targets. If so, skip the tests, as with the |
| 53 | # RSP, we can't issue commands until the target replies to vCont. |
| 54 | # Not an issue with the non-stop RSP variant, which has a |
| 55 | # non-blocking vCont. |
| 56 | if {$non_stop=="off" && [gdb_is_target_remote]} { |
| 57 | return -1 |
| 58 | } |
| 59 | |
| 60 | gdb_breakpoint [gdb_get_line_number "set wait-thread breakpoint here"] |
| 61 | gdb_continue_to_breakpoint "run to wait-thread breakpoint" |
| 62 | |
| 63 | delete_breakpoints |
| 64 | |
| 65 | # Leave the main thread stopped, so GDB can poke at memory freely. |
| 66 | if {$non_stop == "off"} { |
| 67 | gdb_test_no_output "set scheduler-locking on" |
| 68 | gdb_test "thread 2" "Switching to .*" |
| 69 | gdb_test "continue &" "Continuing\." "continuing thread 2" |
| 70 | gdb_test "thread 3" "Switching to .*" |
| 71 | gdb_test "continue &" "Continuing\." "continuing thread 3" |
| 72 | gdb_test "thread 1" "Switching to .*" "switch back to main thread" |
| 73 | } |
| 74 | |
| 75 | # Test with and without pulling the thread list explicitly with |
| 76 | # "info threads". GDB should be able to figure out itself whether |
| 77 | # the target is running and thus breakpoints should be inserted, |
| 78 | # without the user explicitly fetching the thread list. |
| 79 | if {$update_thread_list} { |
| 80 | gdb_test "info threads" \ |
| 81 | "main .*\\\(running\\\).*\\\(running\\\).*" \ |
| 82 | "only main stopped" |
| 83 | } |
| 84 | |
| 85 | # Don't use gdb_test as it's racy in this case -- gdb_test matches |
| 86 | # the prompt with an end anchor. Sometimes expect will manage to |
| 87 | # read the breakpoint hit output while still processing this test, |
| 88 | # defeating the anchor. |
| 89 | set test "set breakpoint while a thread is running" |
| 90 | gdb_test_multiple "break breakpoint_function" $test { |
| 91 | -re "Breakpoint $decimal at .*: file .*$srcfile.*\r\n$gdb_prompt " { |
| 92 | pass $test |
| 93 | } |
| 94 | -re "$gdb_prompt " { |
| 95 | fail $test |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | # Check that the breakpoint is hit. Can't use gdb_test here, as |
| 100 | # no prompt is expected to come out. |
| 101 | set test "breakpoint is hit" |
| 102 | gdb_test_multiple "" $test { |
| 103 | -re "Breakpoint .*, breakpoint_function \[^\r\n\]+" { |
| 104 | pass $test |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | if {$non_stop == "on"} { |
| 109 | gdb_test "info threads" \ |
| 110 | "main .* breakpoint_function .*\\\(running\\\)" \ |
| 111 | "one thread running" |
| 112 | |
| 113 | # Unblock the other thread, which should then trip on the same |
| 114 | # breakpoint, unless GDB removed it by mistake. Can't use |
| 115 | # gdb_test here for the same reasons as above. |
| 116 | set test "unblock second thread" |
| 117 | gdb_test_multiple "print second_child = 1" $test { |
| 118 | -re " = 1\r\n$gdb_prompt " { |
| 119 | pass $test |
| 120 | } |
| 121 | -re "$gdb_prompt " { |
| 122 | fail $test |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | set test "breakpoint on second child is hit" |
| 127 | gdb_test_multiple "" $test { |
| 128 | -re "Breakpoint .*, breakpoint_function \[^\r\n\]+" { |
| 129 | pass $test |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | gdb_test "info threads" \ |
| 134 | " main .* breakpoint_function .* breakpoint_function .*" \ |
| 135 | "all threads stopped" |
| 136 | } else { |
| 137 | # This test is not merged with the non-stop one because in |
| 138 | # all-stop we don't know where the other thread stops (inside |
| 139 | # usleep, for example). |
| 140 | set test "all threads stopped" |
| 141 | gdb_test_multiple "info threads" "$test" { |
| 142 | -re "\\\(running\\\).*$gdb_prompt $" { |
| 143 | fail $test |
| 144 | } |
| 145 | -re "main .* breakpoint_function .*$gdb_prompt $" { |
| 146 | pass $test |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | foreach update_thread_list { true false } { |
| 153 | foreach always_inserted { "off" "on" } { |
| 154 | foreach non_stop { "off" "on" } { |
| 155 | set stop_mode [expr ($non_stop=="off")?"all-stop":"non-stop"] |
| 156 | set update_list_mode [expr ($update_thread_list)?"w/ithr":"wo/ithr"] |
| 157 | with_test_prefix "$update_list_mode: always-inserted $always_inserted: $stop_mode" { |
| 158 | test $update_thread_list $always_inserted $non_stop |
| 159 | } |
| 160 | } |
| 161 | } |
| 162 | } |