| # Copyright 2022-2024 Free Software Foundation, Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| # Test GDB's direct-call-timeout setting, that is, ensure that if an |
| # inferior function call, invoked from e.g. a 'print' command, takes |
| # too long, then GDB can interrupt it, and return control to the user. |
| |
| standard_testfile |
| |
| if { [build_executable "failed to prepare" ${binfile} "${srcfile}" \ |
| {debug}] == -1 } { |
| return |
| } |
| |
| # Start GDB according to TARGET_ASYNC, TARGET_NON_STOP, and NON_STOP, |
| # then adjust the direct-call-timeout, and make an inferior function |
| # call that will never return. GDB should eventually timeout and stop |
| # the inferior. |
| # |
| # When UNWIND is "off" the inferior wil be left in the frame where the |
| # timeout occurs, otherwise, when UNWIND is "on", GDB should unwind |
| # back to the frame where the inferior call was made. |
| proc run_test { target_async target_non_stop non_stop unwind } { |
| save_vars { ::GDBFLAGS } { |
| append ::GDBFLAGS \ |
| " -ex \"maint set target-non-stop $target_non_stop\"" |
| append ::GDBFLAGS \ |
| " -ex \"set non-stop $non_stop\"" |
| append ::GDBFLAGS \ |
| " -ex \"maintenance set target-async ${target_async}\"" |
| |
| clean_restart ${::binfile} |
| } |
| |
| if {![runto_main]} { |
| return |
| } |
| |
| gdb_test_no_output "set direct-call-timeout 5" |
| gdb_test_no_output "set unwind-on-timeout $unwind" |
| |
| if { $unwind } { |
| gdb_test "print function_that_never_returns ()" \ |
| [multi_line \ |
| "The program being debugged timed out while in a function called from GDB\\." \ |
| "GDB has restored the context to what it was before the call\\." \ |
| "To change this behavior use \"set unwind-on-timeout off\"\\." \ |
| "Evaluation of the expression containing the function" \ |
| "\\(function_that_never_returns\\) will be abandoned\\."] |
| |
| gdb_test "bt" \ |
| "#0\\s+main \\(\\).*" |
| } else { |
| # When non-stop mode is off we get slightly different output from GDB. |
| if { ([target_info gdb_protocol] == "remote" |
| || [target_info gdb_protocol] == "extended-remote") |
| && !$target_non_stop } { |
| set stopped_line_pattern "Program received signal SIGINT, Interrupt\\." |
| } else { |
| set stopped_line_pattern "Program stopped\\." |
| } |
| |
| gdb_test "print function_that_never_returns ()" \ |
| [multi_line \ |
| $stopped_line_pattern \ |
| ".*" \ |
| "The program being debugged timed out while in a function called from GDB\\." \ |
| "GDB remains in the frame where the timeout occurred\\." \ |
| "To change this behavior use \"set unwind-on-timeout on\"\\." \ |
| "Evaluation of the expression containing the function" \ |
| "\\(function_that_never_returns\\) will be abandoned\\." \ |
| "When the function is done executing, GDB will silently stop\\."] |
| |
| gdb_test "bt" \ |
| ".* function_that_never_returns .*<function called from gdb>.*" |
| } |
| } |
| |
| foreach_with_prefix target_async { "on" "off" } { |
| |
| if { !$target_async } { |
| # GDB can't timeout while waiting for a thread if the target |
| # runs with async-mode turned off; once the target is running |
| # GDB is effectively blocked until the target stops for some |
| # reason. |
| continue |
| } |
| |
| foreach_with_prefix target_non_stop { "on" "off" } { |
| foreach_with_prefix non_stop { "on" "off" } { |
| if { $non_stop && !$target_non_stop } { |
| # It doesn't make sense to operate GDB in non-stop |
| # mode when the target has (in theory) non-stop mode |
| # disabled. |
| continue |
| } |
| |
| foreach_with_prefix unwind { "on" "off" } { |
| run_test $target_async $target_non_stop $non_stop $unwind |
| } |
| } |
| } |
| } |