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# Copyright (C) 2019-2023 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/>.
standard_testfile
if {[build_executable "failed to prepare" $testfile $srcfile {debug pthreads}] == -1} {
return -1
}
# At this point GDB will be busy handling the breakpoint hits and
# re-resuming the program. Even if GDB internally switches thread
# context, the user should not notice it. The following part of the
# testcase ensures that.
# Switch to thread EXPECTED_THR, and then confirm that the thread
# stays selected.
proc test_current_thread {expected_thr} {
global decimal
global gdb_prompt
global binfile
clean_restart $binfile
if {![runto "all_started"]} {
return
}
# Set a breakpoint that continuously fires but doeesn't cause a stop.
gdb_breakpoint [concat [gdb_get_line_number "set breakpoint here"] " if 0"]
gdb_test "thread $expected_thr" "Switching to thread $expected_thr .*" \
"switch to thread $expected_thr"
# Continue the program in the background.
set test "continue&"
gdb_test_multiple "continue&" $test {
-re "Continuing\\.\r\n$gdb_prompt " {
pass $test
}
}
set test "current thread is $expected_thr"
set fails 0
for {set i 0} {$i < 10} {incr i} {
after 200
set cur_thread 0
gdb_test_multiple "thread" $test {
-re "Current thread is ($decimal) .*$gdb_prompt " {
set cur_thread $expect_out(1,string)
}
}
if {$cur_thread != $expected_thr} {
incr fails
}
}
gdb_assert {$fails == 0} $test
# Explicitly interrupt the target, because in all-stop/remote,
# that's all we can do when the target is running. If we don't do
# this, we'd time out trying to kill the target, while bringing
# down gdb & gdbserver.
set test "interrupt"
gdb_test_multiple $test $test {
-re "^interrupt\r\n$gdb_prompt " {
gdb_test_multiple "" $test {
-re "Thread .* received signal SIGINT, Interrupt\\." {
pass $test
}
}
}
}
}
# Try once with each thread as current, to avoid missing a bug just
# because some part of GDB manages to switch to the right thread by
# chance.
for {set thr 1} {$thr <= 3} {incr thr} {
with_test_prefix "thread $thr" {
test_current_thread $thr
}
}
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