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# Copyright 2008-2012 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 test was created by modifying attach-stopped.exp.
# This file was created by Jan Kratochvil <jan.kratochvil@redhat.com>.
# This test only works on Linux
if { ![isnative] || [is_remote host] || [target_info exists use_gdb_stub]
|| ![istarget *-linux*] } {
continue
}
set testfile "attach-into-signal"
set srcfile ${testfile}.c
set executable_nothr ${testfile}-nothr
set executable_thr ${testfile}-thr
remote_exec build "rm -f ${objdir}/${subdir}/${executable_nothr}"
remote_exec build "rm -f ${objdir}/${subdir}/${executable_thr}"
# For debugging this test
#
#log_user 1
proc corefunc { threadtype executable } {
global srcfile
global srcdir
global objdir
global subdir
global gdb_prompt
with_test_prefix "$threadtype" {
clean_restart ${executable}
set binfile ${objdir}/${subdir}/${executable}
set escapedbinfile [string_to_regexp ${objdir}/${subdir}/${executable}]
if [get_compiler_info ${binfile}] {
return -1
}
gdb_test "handle SIGALRM stop print pass" "Yes.*Yes.*Yes.*"
# Start the program running and then wait for a bit, to be sure
# that it can be attached to.
# Statistically there is a better chance without giving process a nice.
set testpid [eval exec $binfile &]
exec sleep 2
# Run 2 passes of the test.
# The C file inferior stops pending its signals if a single one is lost,
# we test successful redelivery of the caught signal by the 2nd pass.
# linux-2.6.20.4.x86_64 had maximal attempt # 20 in 4 test runs.
set attempts 100
set attempt 1
set passes 1
while { $passes < 3 && $attempt <= $attempts } {
set stoppedtry 0
while { $stoppedtry < 10 } {
if [catch {open /proc/${testpid}/status r} fileid] {
set stoppedtry 10
break
}
gets $fileid line1;
gets $fileid line2;
close $fileid;
if {![string match "*(stopped)*" $line2]} {
# No PASS message as we may be looping in multiple
# attempts.
break
}
sleep 1
set stoppedtry [expr $stoppedtry + 1]
}
if { $stoppedtry >= 10 } {
verbose -log $line2
set test "process is still running on the attempt # $attempt of $attempts"
break
}
# Main test:
set test "attach (pass $passes), pending signal catch"
if {[gdb_test_multiple "attach $testpid" $test {
-re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*Program received signal SIGALRM.*$gdb_prompt $" {
# nonthreaded:
pass $test
verbose -log "$test succeeded on the attempt # $attempt of $attempts"
set passes [expr $passes + 1]
}
-re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
set ok 0
if { $threadtype == "threaded" } {
# In the threaded case, the signal is left
# pending on the second thread. Check for
# that by peeking at the thread's siginfo.
# SIGALRM is 14, SIGSTOP is 19.
# With remote targets, we need to pull the
# thread list explicitly before GDB even knows
# about thread 2.
set test2 "pull thread list"
gdb_test_multiple "info threads" $test2 {
-re "\r\n$gdb_prompt $" {
}
}
set test2 "thread apply 2 print \$_siginfo.si_signo"
gdb_test_multiple $test2 $test2 {
-re " = 14\r\n$gdb_prompt $" {
set ok 1
}
-re " = 19\r\n$gdb_prompt $" {
}
}
} else {
# In the nonthreaded case, GDB should tell the
# user about having seen a signal.
}
if { $ok == 0} {
# We just lack the luck, we should try it again.
set attempt [expr $attempt + 1]
} else {
pass $test
verbose -log "$test succeeded on the attempt # $attempt of $attempts"
set passes [expr $passes + 1]
}
}
}] != 0 } {
break
}
gdb_test "detach" "Detaching from.*" ""
}
if {$passes < 3} {
if {$attempt > $attempts} {
unresolved $test
} else {
fail $test
}
}
# Exit and detach the process.
gdb_exit
# Make sure we don't leave a process around to confuse the
# next test run (and prevent the compile by keeping the text
# file busy), in case the "set should_exit" didn't work.
# Continue the program - some Linux kernels need it before -9 if the
# process is stopped.
remote_exec build "kill -s CONT ${testpid}"
remote_exec build "kill -9 ${testpid}"
}
}
# build the test case first without threads
#
if {[build_executable $testfile $executable_nothr $srcfile] == -1} {
untested "attach-into-signal.exp (nonthreaded)"
return -1
}
corefunc nonthreaded ${executable_nothr}
# build the test case also with threads
#
if { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${objdir}/${subdir}/${executable_thr}" executable {debug additional_flags=-DUSE_THREADS}] != "" } {
untested "attach-into-signal.exp (threaded)"
return -1
}
corefunc threaded ${executable_thr}
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