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# This testcase is part of GDB, the GNU debugger.
# Copyright 2016-2020 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 attach / detach from a process that uses raw clone. We use raw
# clone as proxy for when libthread_db is not available.
# This only works on targets with the Linux kernel.
if ![istarget *-*-linux*] {
return
}
if {![can_spawn_for_attach]} {
return 0
}
standard_testfile
if [prepare_for_testing "failed to prepare" $testfile $srcfile {debug}] {
return -1
}
clean_restart ${binfile}
set test_spawn_id [spawn_wait_for_attach $binfile]
set testpid [spawn_id_get_pid $test_spawn_id]
# Native/gdbserver.
set thread_re "(LWP $decimal|Thread )"
# Try attach / detach a few times, in case GDB ends up with stale
# state after detaching.
set attempts 3
for {set attempt 1} {$attempt <= $attempts} {incr attempt} {
with_test_prefix "fg attach $attempt" {
gdb_test "attach $testpid" \
"Attaching to program.*process $testpid.*" \
"attach"
gdb_test "info threads" \
"1.*${thread_re}.*\r\n.*2.*${thread_re}.*" \
"info threads shows two LWPs"
gdb_test "detach" "Detaching from .*, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]"
}
}
# Same, but use async/background attach.
# If debugging with target remote, check whether the all-stop variant
# of the RSP is being used. If so, we can't run the background tests.
if {[target_info exists gdb_protocol]
&& ([target_info gdb_protocol] == "remote"
|| [target_info gdb_protocol] == "extended-remote")} {
set test "maint show target-non-stop"
gdb_test_multiple "maint show target-non-stop" $test {
-re "(is|currently) on.*$gdb_prompt $" {
}
-re "(is|currently) off.*$gdb_prompt $" {
unsupported "bg attach: can't issue info threads while target is running"
return 0
}
}
}
set attempts 3
for {set attempt 1} {$attempt <= $attempts} {incr attempt} {
with_test_prefix "bg attach $attempt" {
gdb_test "attach $testpid &" \
"Attaching to program.*process $testpid.*" \
"attach"
gdb_test "info threads" \
"1.*${thread_re}.*\\(running\\)\r\n.*2.*${thread_re}.*\\(running\\)" \
"info threads shows two LWPs"
gdb_test "detach" "Detaching from .*, process $testpid\r\n\\\[Inferior $decimal \\(.*\\) detached\\\]"
}
}
kill_wait_spawned_process $test_spawn_id
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