gdb/testsuite/gdb.base/multi-forks.exp

   1 #   Copyright 2005 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 2 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, write to the Free Software
  15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  16
  17 # Please email any bugs, comments, and/or additions to this file to:
  18 # bug-gdb@prep.ai.mit.edu
  19
  20 if $tracelevel then {
  21         strace $tracelevel
  22         }
  23
  24 if { ![isnative] } then {
  25     continue
  26 }
  27
  28 # Until "set follow-fork-mode" and "catch fork" are implemented on
  29 # other targets...
  30 #
  31 if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-*-linux*"]} then {
  32     continue
  33 }
  34
  35 set prms_id 0
  36 set bug_id 0
  37
  38 set testfile "multi-forks"
  39 set srcfile ${testfile}.c
  40 set binfile ${objdir}/${subdir}/${testfile}
  41
  42 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  43      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  44 }
  45
  46 # Start with a fresh gdb
  47
  48 gdb_exit
  49 gdb_start
  50 gdb_reinitialize_dir $srcdir/$subdir
  51 gdb_load ${binfile}
  52
  53 global gdb_prompt
  54
  55 # This is a test of gdb's ability to follow the parent, child or both
  56 # parent and child of multiple Unix fork() system calls.
  57 #
  58
  59 # Inferior program calls fork 4 times.  Since each fork
  60 # calls fork 4 times, there will be 16 forks.  Each fork
  61 # saves the return values of its own 4 fork calls.
  62
  63 # First set gdb to follow the child.
  64 # The result should be that each of the 4 forks returns zero.
  65
  66 runto_main
  67 set exit_bp_loc [gdb_get_line_number "Set exit breakpoint here."]
  68 gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" "Break at exit"
  69 gdb_test "set follow child" "" ""
  70
  71 send_gdb "continue\n"
  72 gdb_expect {
  73     -re ".*Break.* main .*$gdb_prompt $" {}
  74     -re ".*$gdb_prompt $" {fail "run to exit 1"}
  75     default {fail "run to exit 1 (timeout)"}
  76 }
  77
  78 gdb_test "print pids" "\\$.* = \\{0, 0, 0, 0\\}.*" "follow child, print pids"
  79
  80 # Now set gdb to follow the parent.
  81 # Result should be that none of the 4 forks returns zero.
  82
  83 delete_breakpoints
  84 runto_main
  85 gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" "Break at exit"
  86 gdb_test "set follow parent" "" ""
  87
  88 send_gdb "continue\n"
  89 gdb_expect {
  90     -re ".*Break.* main .*$gdb_prompt $" {}
  91     -re ".*$gdb_prompt $" {fail "run to exit 2"}
  92     default {fail "run to exit 2 (timeout)"}
  93 }
  94
  95 gdb_test "print pids\[0\]==0 || pids\[1\]==0 || pids\[2\]==0 || pids\[3\]==0" \
  96     " = 0" "follow parent, print pids"
  97
  98 #
  99 # Now test with detach-on-fork off.
 100 #
 101
 102 runto_main
 103 gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" ""
 104
 105 gdb_test "help set detach-on-fork" "whether gdb will detach the child.*" \
 106     "help set detach"
 107
 108 gdb_test "show detach-on-fork" "on." "show detach default on"
 109
 110 gdb_test "set detach off" "" "set detach off"
 111
 112 #
 113 # We will now run every fork up to the exit bp,
 114 # eventually winding up with 16 forks.
 115 #
 116
 117 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 1"
 118 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 1"
 119 gdb_test "restart 1" "_dl_sysinfo_int80.*" "restart 1"
 120
 121 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 2"
 122 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 2"
 123 gdb_test "restart 2" "_dl_sysinfo_int80.*" "restart 2"
 124
 125 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 3"
 126 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 3"
 127 gdb_test "restart 3" "_dl_sysinfo_int80.*" "restart 3"
 128
 129 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 4"
 130 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 4"
 131 gdb_test "restart 4" "_dl_sysinfo_int80.*" "restart 4"
 132
 133 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 5"
 134 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 5"
 135 gdb_test "restart 5" "_dl_sysinfo_int80.*" "restart 5"
 136
 137 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 6"
 138 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 6"
 139 gdb_test "restart 6" "_dl_sysinfo_int80.*" "restart 6"
 140
 141 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 7"
 142 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 7"
 143 gdb_test "restart 7" "_dl_sysinfo_int80.*" "restart 7"
 144
 145 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 8"
 146 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 8"
 147 gdb_test "restart 8" "_dl_sysinfo_int80.*" "restart 8"
 148
 149 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 9"
 150 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 9"
 151 gdb_test "restart 9" "_dl_sysinfo_int80.*" "restart 9"
 152
 153 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 10"
 154 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 10"
 155 gdb_test "restart 10" "_dl_sysinfo_int80.*" "restart 10"
 156
 157 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 11"
 158 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 11"
 159 gdb_test "restart 11" "_dl_sysinfo_int80.*" "restart 11"
 160
 161 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 12"
 162 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 12"
 163 gdb_test "restart 12" "_dl_sysinfo_int80.*" "restart 12"
 164
 165 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 13"
 166 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 13"
 167 gdb_test "restart 13" "_dl_sysinfo_int80.*" "restart 13"
 168
 169 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 14"
 170 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 14"
 171 gdb_test "restart 14" "_dl_sysinfo_int80.*" "restart 14"
 172
 173 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 15"
 174 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 15"
 175 gdb_test "restart 15" "_dl_sysinfo_int80.*" "restart 15"
 176
 177 gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 16"
 178 gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 16"
 179 gdb_test "restart 0" " main .*" "restart final"
 180
 181 #
 182 # Now we should examine all the pids.
 183 #
 184
 185 #
 186 # Test detach-fork
 187 #
 188
 189 # [assumes we're at #0]
 190 gdb_test "detach-fork 1" "Detached .*" "Detach 1"
 191 gdb_test "detach-fork 2" "Detached .*" "Detach 2"
 192 gdb_test "detach-fork 3" "Detached .*" "Detach 3"
 193 gdb_test "detach-fork 4" "Detached .*" "Detach 4"
 194
 195 #
 196 # Test delete-fork
 197 #
 198
 199 gdb_test "delete-fork 5" "" "Delete 5"
 200 gdb_test "delete-fork 6" "" "Delete 6"
 201 gdb_test "delete-fork 7" "" "Delete 7"
 202 gdb_test "delete-fork 8" "" "Delete 8"
 203 gdb_test "delete-fork 9" "" "Delete 9"
 204 gdb_test "delete-fork 10" "" "Delete 10"
 205 gdb_test "delete-fork 11" "" "Delete 11"
 206 gdb_test "delete-fork 12" "" "Delete 12"
 207 gdb_test "delete-fork 13" "" "Delete 13"
 208 gdb_test "delete-fork 14" "" "Delete 14"
 209 gdb_test "delete-fork 15" "" "Delete 15"
 210
 211
 212
 213 return 0
 214