gdb/testsuite/gdb.threads/attach-into-signal.exp

   1 # Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This test was created by modifying attach-stopped.exp.
  17 # This file was created by Jan Kratochvil <jan.kratochvil@redhat.com>.
  18
  19 # This test only works on Linux
  20 if { ![isnative] || [is_remote host] || ![istarget *-linux*] } {
  21     continue
  22 }
  23
  24 set testfile "attach-into-signal"
  25 set srcfile  ${testfile}.c
  26 set binfile  ${objdir}/${subdir}/${testfile}
  27 set escapedbinfile  [string_to_regexp ${objdir}/${subdir}/${testfile}]
  28
  29 remote_exec build "rm -f ${binfile}"
  30 # For debugging this test
  31 #
  32 #log_user 1
  33
  34 proc corefunc { threadtype } {
  35     global srcfile
  36     global binfile
  37     global escapedbinfile
  38     global srcdir
  39     global subdir
  40     global gdb_prompt
  41
  42     if [get_compiler_info ${binfile}] {
  43         return -1
  44     }
  45
  46     # Start the program running and then wait for a bit, to be sure
  47     # that it can be attached to.
  48     # Statistically there is a better chance without giving process a nice.
  49
  50     set testpid [eval exec $binfile &]
  51     exec sleep 2
  52
  53     # Run 2 passes of the test.
  54     # The C file inferior stops pending its signals if a single one is lost,
  55     # we test successful redelivery of the caught signal by the 2nd pass.
  56
  57     # linux-2.6.20.4.x86_64 had maximal attempt # 20 in 4 test runs.
  58     set attempts 100
  59     set attempt 1
  60     set passes 1
  61     while { $passes < 3 && $attempt <= $attempts } {
  62         set stoppedtry 0
  63         while { $stoppedtry < 10 } {
  64             if [catch {open /proc/${testpid}/status r} fileid] {
  65                 set stoppedtry 10
  66                 break
  67             }
  68             gets $fileid line1;
  69             gets $fileid line2;
  70             close $fileid;
  71
  72             if {![string match "*(stopped)*" $line2]} {
  73                 # No PASS message as we may be looping in multiple attempts.
  74                 break
  75             }
  76             sleep 1
  77             set stoppedtry [expr $stoppedtry + 1]
  78         }
  79         if { $stoppedtry >= 10 } {
  80             verbose -log $line2
  81             set test "$threadtype: process is still running on the attempt # $attempt of $attempts"
  82             break
  83         }
  84
  85         # Main test:
  86         set test "$threadtype: attach (pass $passes), pending signal catch"
  87         if {[gdb_test_multiple "attach $testpid" $test {
  88             -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*Received Alarm clock.*$gdb_prompt $" {
  89                 # nonthreaded:
  90                 pass $test
  91                 verbose -log "$test succeeded on the attempt # $attempt of $attempts"
  92                 set passes [expr $passes + 1]
  93             }
  94             -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
  95                 # nonthreaded:
  96                 # We just lack the luck, we should try it again.
  97                 set attempt [expr $attempt + 1]
  98             }
  99             -re "Attaching to process $testpid.*Received Alarm clock.*$gdb_prompt $" {
 100                 # threaded:
 101                 pass $test
 102                 verbose -log "$test succeeded on the attempt # $attempt of $attempts"
 103                 set passes [expr $passes + 1]
 104             }
 105             -re "Attaching to process $testpid.*$gdb_prompt $" {
 106                 # threaded:
 107                 # We just lack the luck, we should try it again.
 108                 set attempt [expr $attempt - 1]
 109             }
 110         }] != 0 } {
 111             break
 112         }
 113
 114         gdb_test "detach" "Detaching from.*" ""
 115     }
 116     if {$passes < 3} {
 117         if {$attempt > $attempts} {
 118             unresolved $test
 119         } else {
 120             fail $test
 121         }
 122     }
 123
 124     # Exit and detach the process.
 125
 126     gdb_exit
 127
 128     # Make sure we don't leave a process around to confuse
 129     # the next test run (and prevent the compile by keeping
 130     # the text file busy), in case the "set should_exit" didn't
 131     # work.
 132
 133     # Continue the program - some Linux kernels need it before -9 if the
 134     # process is stopped.
 135     remote_exec build "kill -s CONT ${testpid}"
 136
 137     remote_exec build "kill -9 ${testpid}"
 138 }
 139
 140 # Start with clean gdb
 141 gdb_exit
 142
 143 # build the test case first without threads
 144 #
 145 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
 146     untested "attach-into-signal.exp (unthreaded)"
 147     return -1
 148 }
 149
 150 gdb_start
 151 gdb_reinitialize_dir $srcdir/$subdir
 152 gdb_load ${binfile}
 153 gdb_test_no_output "set debug lin-lwp 1" ""
 154
 155 corefunc nonthreaded
 156
 157 # build the test case also with threads
 158 #
 159 if  { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DUSE_THREADS}] != "" } {
 160     untested "attach-into-signal.exp (threaded)"
 161     return -1
 162 }
 163
 164 gdb_start
 165 gdb_reinitialize_dir $srcdir/$subdir
 166 gdb_load ${binfile}
 167 gdb_test_no_output "set debug lin-lwp 1" ""
 168
 169 corefunc threaded