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# manythreads.exp -- Expect script to test stopping many threads
# Copyright (C) 2004-2023 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/>.
# This file was written by Jeff Johnston. (jjohnstn@redhat.com)
# This test requires sending ^C to interrupt the running target.
if [target_info exists gdb,nointerrupts] {
verbose "Skipping manythreads.exp because of nointerrupts."
return
}
standard_testfile
set opts { debug }
if [info exists DEBUG] {
# make check RUNTESTFLAGS='gdb.threads/manythreads.exp DEBUG=1'
lappend opts "additional_flags=-DDEBUG"
}
if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable $opts] != "" } {
return -1
}
clean_restart ${binfile}
gdb_test_no_output "set print sevenbit-strings"
runto_main
# We'll need this when we send_gdb a ^C to GDB. Need to do it before we
# run the program and gdb starts saving and restoring tty states.
gdb_test "shell stty intr '^C'" ".*"
set message "first continue"
gdb_test_multiple "continue" "first continue" {
-re "error:.*$gdb_prompt $" {
fail "$message"
}
-re "Continuing" {
pass "$message"
}
}
# Wait one second. This is better than the TCL "after" command, because
# we don't lose GDB's output while we do it.
remote_expect host 1 { timeout { } }
# Send a Ctrl-C and wait for the SIGINT.
proc interrupt_and_wait { message } {
global gdb_prompt
send_gdb "\003"
set saw_signal 0
set order_ok 1
gdb_test_multiple "" $message {
-re "\r\n\\\[New \[^\r\n\]*(?=\r\n)" {
# Note if GDB emits [New Thread ...] output between
# "Thread NNN received signal" and the prompt, it's a
# regression.
#
# GDB makes sure to notify about signal stops, end of
# stepping ranges, etc., only after updating the thread
# list, otherwise that stop info would be easy to miss.
#
# A BROKEN example would be:
#
# ... pages of new threads output ...
# [New Thread NNN]
# ^C
# ... more new threads output ...
# [New Thread NNN]
# [New Thread NNN]
# Thread NNN received signal SIGINT, Interrupt.
# [New Thread NNN]
# [New Thread NNN]
# ... pages of new threads output ...
# [Switching to Thread NNN]
# foo () at foo.c:31
# 31 bar ();
#
if { $saw_signal } {
set order_ok 0
}
exp_continue
}
-re "\r\n\\\[\[^\r\n]* exited\\\](?=\r\n)" {
exp_continue
}
-re "\r\n\[^\r\n]* received signal SIGINT\[^\r\n\]*(?=\r\n)" {
set saw_signal 1
exp_continue
}
-re -wrap "" {
gdb_assert {$saw_signal && $order_ok} $gdb_test_name
}
}
}
# Send a Ctrl-C and verify that we can do info threads and continue
interrupt_and_wait "stop threads 1"
set cmd "info threads"
set ok 0
gdb_test_multiple $cmd $cmd {
-re " 1 *Thread " {
set ok 1
exp_continue
}
-re ".*\r\n" {
# Eat this line and continue, to prevent the buffer overflowing.
exp_continue
}
-re "$gdb_prompt $" {
if { $ok } {
pass $cmd
} else {
fail $cmd
}
}
}
gdb_test_no_output "thread name zardoz" "give a name to the thread"
gdb_test "info threads" ".*zardoz.*" "check thread name"
set message "second continue"
gdb_test_multiple "continue" "second continue" {
-re "error:.*$gdb_prompt $" {
fail "$message"
}
-re "Continuing" {
pass "$message"
}
}
# Wait another second. If the program stops on its own, GDB has failed
# to handle duplicate SIGINTs sent to multiple threads.
set failed 0
remote_expect host 1 {
-re "\\\[New \[^\]\]*\\\]\r\n" {
exp_continue -continue_timer
}
-re "\\\[\[^\]\]* exited\\\]\r\n" {
exp_continue -continue_timer
}
-re " received signal SIGINT.*$gdb_prompt $" {
if { $failed == 0 } {
fail "check for duplicate SIGINT"
}
send_gdb "continue\n"
set failed 1
exp_continue
}
timeout {
if { $failed == 0 } {
pass "check for duplicate SIGINT"
}
}
}
# Send another Ctrl-C and verify that we can do info threads and quit
interrupt_and_wait "stop threads 2"
gdb_test_multiple "quit" "GDB exits after stopping multithreaded program" {
-re "Quit anyway\\? \\(y or n\\) $" {
send_gdb "y\n"
exp_continue
}
eof {
pass "GDB exits after stopping multithreaded program"
}
timeout {
fail "GDB exits after stopping multithreaded program (timeout)"
}
}
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