80 lines
2.8 KiB
Text
80 lines
2.8 KiB
Text
# Copyright 2021-2022 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test running into vfork while "detach-on-fork" is off and "follow-fork-mode"
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# is parent. This shows a "Can not resume the parent process..." message. If
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# the user wants to resume execution, they have to use either "set
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# schedule-multiple on" or "set detach-on-fork on". Test these two resolution
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# methods.
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standard_testfile
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if { [build_executable "failed to prepare" \
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${testfile} ${srcfile}] } {
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return
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}
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# Test running to the "Can not resume the parent..." message. Then, resolve
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# the situation using the method in RESOLUTION_METHOD, either "detach-on-fork"
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# or "schedule-multiple" (the two alternatives the message suggests to the
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# user).
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proc do_test { resolution_method } {
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clean_restart $::binfile
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gdb_test_no_output "set detach-on-fork off"
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if { ![runto_main] } {
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return
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}
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gdb_test "break break_parent"
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gdb_test "continue" \
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"Can not resume the parent process over vfork .*" \
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"continue to vfork"
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# Try to continue again from there, expecting the same message. It
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# exercises a different code path in GDB.
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gdb_test "continue" \
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"Can not resume the parent process over vfork .*" \
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"try to continue from vfork"
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# Unblock the execution using the specified resolution method.
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if { $resolution_method == "detach-on-fork" } {
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# Make GDB detach the child.
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gdb_test "set detach-on-fork on"
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gdb_test "print unblock_parent = 1" " = 1"
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} elseif { $resolution_method == "schedule-multiple" } {
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# Make GDB resume both inferiors. The parent is blocked while the
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# children executes, so the continue will make the child reach the
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# end.
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gdb_test "set schedule-multiple on"
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gdb_test "continue" "$::inferior_exited_re normally.*" \
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"continue to end of inferior 2"
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gdb_test "inferior 1" ".*Switching to inferior 1.*"
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gdb_test "print unblock_parent = 1" " = 1"
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} else {
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error "invalid resolution method: $resolution_method"
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}
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# Continue from the vfork call to the breakpoint.
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gdb_test "continue" "Breakpoint $::decimal, break_parent .*" \
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"continue to break_parent"
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}
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foreach_with_prefix resolution_method {detach-on-fork schedule-multiple} {
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do_test $resolution_method
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}
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