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

   1 # Copyright 2008-2012 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] || [target_info exists use_gdb_stub]
  21      || ![istarget *-linux*] } {
  22     continue
  23 }
  24
  25 set testfile "attach-into-signal"
  26 set srcfile  ${testfile}.c
  27 set binfile  ${objdir}/${subdir}/${testfile}
  28 set escapedbinfile  [string_to_regexp ${objdir}/${subdir}/${testfile}]
  29
  30 remote_exec build "rm -f ${binfile}"
  31 # For debugging this test
  32 #
  33 #log_user 1
  34
  35 proc corefunc { threadtype } {
  36     global srcfile
  37     global binfile
  38     global escapedbinfile
  39     global srcdir
  40     global subdir
  41     global gdb_prompt
  42
  43     if [get_compiler_info ${binfile}] {
  44         return -1
  45     }
  46
  47     # Start the program running and then wait for a bit, to be sure
  48     # that it can be attached to.
  49     # Statistically there is a better chance without giving process a nice.
  50
  51     set testpid [eval exec $binfile &]
  52     exec sleep 2
  53
  54     # Run 2 passes of the test.
  55     # The C file inferior stops pending its signals if a single one is lost,
  56     # we test successful redelivery of the caught signal by the 2nd pass.
  57
  58     # linux-2.6.20.4.x86_64 had maximal attempt # 20 in 4 test runs.
  59     set attempts 100
  60     set attempt 1
  61     set passes 1
  62     while { $passes < 3 && $attempt <= $attempts } {
  63         set stoppedtry 0
  64         while { $stoppedtry < 10 } {
  65             if [catch {open /proc/${testpid}/status r} fileid] {
  66                 set stoppedtry 10
  67                 break
  68             }
  69             gets $fileid line1;
  70             gets $fileid line2;
  71             close $fileid;
  72
  73             if {![string match "*(stopped)*" $line2]} {
  74                 # No PASS message as we may be looping in multiple attempts.
  75                 break
  76             }
  77             sleep 1
  78             set stoppedtry [expr $stoppedtry + 1]
  79         }
  80         if { $stoppedtry >= 10 } {
  81             verbose -log $line2
  82             set test "$threadtype: process is still running on the attempt # $attempt of $attempts"
  83             break
  84         }
  85
  86         # Main test:
  87         set test "$threadtype: attach (pass $passes), pending signal catch"
  88         if {[gdb_test_multiple "attach $testpid" $test {
  89             -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*Received Alarm clock.*$gdb_prompt $" {
  90                 # nonthreaded:
  91                 pass $test
  92                 verbose -log "$test succeeded on the attempt # $attempt of $attempts"
  93                 set passes [expr $passes + 1]
  94             }
  95             -re "Attaching to program.*`?$escapedbinfile'?, process $testpid.*$gdb_prompt $" {
  96                 # nonthreaded:
  97                 # We just lack the luck, we should try it again.
  98                 set attempt [expr $attempt + 1]
  99             }
 100             -re "Attaching to process $testpid.*Received Alarm clock.*$gdb_prompt $" {
 101                 # threaded:
 102                 pass $test
 103                 verbose -log "$test succeeded on the attempt # $attempt of $attempts"
 104                 set passes [expr $passes + 1]
 105             }
 106             -re "Attaching to process $testpid.*$gdb_prompt $" {
 107                 # threaded:
 108                 # We just lack the luck, we should try it again.
 109                 set attempt [expr $attempt - 1]
 110             }
 111         }] != 0 } {
 112             break
 113         }
 114
 115         gdb_test "detach" "Detaching from.*" ""
 116     }
 117     if {$passes < 3} {
 118         if {$attempt > $attempts} {
 119             unresolved $test
 120         } else {
 121             fail $test
 122         }
 123     }
 124
 125     # Exit and detach the process.
 126
 127     gdb_exit
 128
 129     # Make sure we don't leave a process around to confuse
 130     # the next test run (and prevent the compile by keeping
 131     # the text file busy), in case the "set should_exit" didn't
 132     # work.
 133
 134     # Continue the program - some Linux kernels need it before -9 if the
 135     # process is stopped.
 136     remote_exec build "kill -s CONT ${testpid}"
 137
 138     remote_exec build "kill -9 ${testpid}"
 139 }
 140
 141 # Start with clean gdb
 142 gdb_exit
 143
 144 # build the test case first without threads
 145 #
 146 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
 147     untested "attach-into-signal.exp (unthreaded)"
 148     return -1
 149 }
 150
 151 gdb_start
 152 gdb_reinitialize_dir $srcdir/$subdir
 153 gdb_load ${binfile}
 154 gdb_test_no_output "set debug lin-lwp 1" ""
 155
 156 corefunc nonthreaded
 157
 158 # build the test case also with threads
 159 #
 160 if  { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DUSE_THREADS}] != "" } {
 161     untested "attach-into-signal.exp (threaded)"
 162     return -1
 163 }
 164
 165 gdb_start
 166 gdb_reinitialize_dir $srcdir/$subdir
 167 gdb_load ${binfile}
 168 gdb_test_no_output "set debug lin-lwp 1" ""
 169
 170 corefunc threaded