gdb/testsuite/gdb.hp/foll-fork.exp

   1 #   Copyright (C) 1997 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 set prms_id 0
  25 set bug_id 0
  26
  27 if { [skip_hp_tests] } then { continue }
  28
  29 if {![istarget "hppa*-*-hpux10.30"] && ![istarget "hppa*-*-hpux11.*"]} {
  30     #setup_xfail "*-*.*"
  31     return 0
  32 }
  33
  34 set testfile "foll-fork"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37
  38 # build the first test case
  39 #if  { [compile "-g ${srcdir}/${subdir}/${srcfile} -o ${binfile} "] != "" } {
  40 #    execute_anywhere "rm -f ${objdir}/${subdir}/${testfile}.tmp"
  41     # built the second test case since we can't use prototypes
  42 #    warning "Prototypes not supported, rebuilding with -DNO_PROTOTYPES"
  43 #    execute_anywhere "echo set prototypes 0 > ${objdir}/${subdir}/${testfile}.tmp"
  44 #    if  { [compile "-g -DNO_PROTOTYPES ${srcdir}/${subdir}/${srcfile} -o ${binfile} "] != "" } {
  45 #       perror "Couldn't compile ${testfile}.c"
  46 #       return -1
  47 #    }
  48 #}
  49
  50 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  51      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  52 }
  53
  54
  55
  56 # Until "set follow-fork-mode" and "catch fork" are implemented on
  57 # other targets...
  58 #
  59 if ![istarget "hppa*-hp-hpux*"] then {
  60    setup_xfail "*-*-*"
  61 }
  62
  63 proc default_fork_parent_follow {} {
  64    global gdb_prompt
  65
  66    send_gdb "show follow\n"
  67    gdb_expect {
  68       -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
  69                       {pass "default show parent follow, no catchpoints"}
  70       -re "$gdb_prompt $" {fail "default show parent follow, no catchpoints"}
  71       timeout         {fail "(timeout) default show parent follow, no catchpoints"}
  72    }
  73    send_gdb "next 2\n"
  74    gdb_expect {
  75       -re "Detaching after fork from.*$gdb_prompt $"\
  76                       {pass "default parent follow, no catchpoints"}
  77       -re "$gdb_prompt $" {fail "default parent follow, no catchpoints"}
  78       timeout         {fail "(timeout) default parent follow, no catchpoints" }
  79    }
  80    # The child has been detached; allow time for any output it might
  81    # generate to arrive, so that output doesn't get confused with
  82    # any expected debugger output from a subsequent testpoint.
  83    #
  84    exec sleep 1
  85 }
  86
  87 proc explicit_fork_parent_follow {} {
  88    global gdb_prompt
  89
  90    send_gdb "set follow parent\n"
  91    gdb_expect {
  92       -re "$gdb_prompt $" {pass "set follow parent"}
  93       timeout         {fail "(timeout) set follow parent"}
  94    }
  95    send_gdb "show follow\n"
  96    gdb_expect {
  97       -re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
  98                       {pass "explicit show parent follow, no catchpoints"}
  99       -re "$gdb_prompt $" {fail "explicit show parent follow, no catchpoints"}
 100       timeout         {fail "(timeout) explicit show parent follow, no catchpoints"}
 101    }
 102    send_gdb "next 2\n"
 103    gdb_expect {
 104       -re "Detaching after fork from.*$gdb_prompt $"\
 105                       {pass "explicit parent follow, no catchpoints"}
 106       -re "$gdb_prompt $" {fail "explicit parent follow, no catchpoints"}
 107       timeout         {fail "(timeout) explicit parent follow, no catchpoints"}
 108    }
 109    # The child has been detached; allow time for any output it might
 110    # generate to arrive, so that output doesn't get confused with
 111    # any expected debugger output from a subsequent testpoint.
 112    #
 113    exec sleep 1
 114 }
 115
 116 proc explicit_fork_child_follow {} {
 117    global gdb_prompt
 118
 119    send_gdb "set follow child\n"
 120    gdb_expect {
 121       -re "$gdb_prompt $" {pass "set follow child"}
 122       timeout         {fail "(timeout) set follow child"}
 123    }
 124    send_gdb "show follow\n"
 125    gdb_expect {
 126       -re "Debugger response to a program call of fork or vfork is \"child\"..*$gdb_prompt $"\
 127                       {pass "explicit show child follow, no catchpoints"}
 128       -re "$gdb_prompt $" {fail "explicit show child follow, no catchpoints"}
 129       timeout         {fail "(timeout) explicit show child follow, no catchpoints"}
 130    }
 131    send_gdb "next 2\n"
 132    gdb_expect {
 133       -re "Detaching from program:.*Attaching after fork to.*$gdb_prompt $"\
 134                       {pass "explicit child follow, no catchpoints"}
 135       -re "$gdb_prompt $" {fail "explicit child follow, no catchpoints"}
 136       timeout         {fail "(timeout) explicit child follow, no catchpoints"}
 137    }
 138    # The child has been detached; allow time for any output it might
 139    # generate to arrive, so that output doesn't get confused with
 140    # any gdb_expected debugger output from a subsequent testpoint.
 141    #
 142    exec sleep 1
 143 }
 144
 145 proc catch_fork_child_follow {} {
 146    global gdb_prompt
 147
 148    send_gdb "catch fork\n"
 149    gdb_expect {
 150       -re "Catchpoint .*(fork).*$gdb_prompt $"\
 151                       {pass "explicit child follow, set catch fork"}
 152       -re "$gdb_prompt $" {fail "explicit child follow, set catch fork"}
 153       timeout         {fail "(timeout) explicit child follow, set catch fork"}
 154    }
 155
 156    # Verify that the catchpoint is mentioned in an "info breakpoints",
 157    # and further that the catchpoint mentions no process id.
 158    #
 159    send_gdb "info breakpoints\n"
 160    gdb_expect {
 161      -re ".*catch fork.*keep y.*$gdb_prompt $"\
 162                      {pass "info shows catchpoint without pid"}
 163      -re ".*catch fork.*process .*$gdb_prompt $"\
 164                      {fail "info shows catchpoint without pid"}
 165      -re "$gdb_prompt $" {fail "info shows catchpoint without pid"}
 166      timeout         {fail "(timeout) info shows catchpoint without pid"}
 167    }
 168
 169    send_gdb "continue\n"
 170    gdb_expect {
 171       -re "Catchpoint.*(forked process.*),.*in _fork_sys.*$gdb_prompt $"\
 172                       {pass "explicit child follow, catch fork"}
 173       -re "$gdb_prompt $" {fail "explicit child follow, catch fork"}
 174       timeout         {fail "(timeout) explicit child follow, catch fork"}
 175    }
 176
 177    # Verify that the catchpoint is mentioned in an "info breakpoints",
 178    # and further that the catchpoint managed to capture a process id.
 179    #
 180    send_gdb "info breakpoints\n"
 181    gdb_expect {
 182      -re ".*catch fork .*process \[0-9\]+.*$gdb_prompt $"\
 183                      {pass "info shows catchpoint pid"}
 184      -re "$gdb_prompt $" {fail "info shows catchpoint pid"}
 185      timeout         {fail "(timeout) info shows catchpoint pid"}
 186    }
 187
 188    send_gdb "set follow child\n"
 189    gdb_expect {
 190       -re "$gdb_prompt $" {pass "set follow child"}
 191       timeout         {fail "(timeout) set follow child"}
 192    }
 193    send_gdb "tbreak 15\n"
 194    gdb_expect {
 195       -re "Breakpoint.*, line 15.*$gdb_prompt $"\
 196                       {pass "set follow child, tbreak"}
 197       -re "$gdb_prompt $" {fail "set follow child, tbreak"}
 198       timeout         {fail "(timeout) set follow child, tbreak"}
 199    }
 200    send_gdb "continue\n"
 201    gdb_expect {
 202       -re ".*Detaching from program:.*Attaching after fork to.* at .*15.*$gdb_prompt $"\
 203                       {pass "set follow child, hit tbreak"}
 204       -re "$gdb_prompt $" {fail "set follow child, hit tbreak"}
 205       timeout         {fail "(timeout) set follow child, hit tbreak"}
 206    }
 207    # The child has been detached; allow time for any output it might
 208    # generate to arrive, so that output doesn't get confused with
 209    # any expected debugger output from a subsequent testpoint.
 210    #
 211    exec sleep 1
 212    send_gdb "delete breakpoints\n"
 213    gdb_expect {
 214       -re "Delete all breakpoints.*$" {
 215          send_gdb "y\n"
 216          gdb_expect {
 217             -re "$gdb_prompt $"\
 218                     {pass "set follow child, cleanup"}
 219             timeout {fail "(timeout) set follow child, cleanup"}
 220          }
 221       }
 222       -re "$gdb_prompt $" {fail "set follow child, cleanup"}
 223       timeout         {fail "(timeout) set follow child, cleanup"}
 224    }
 225 }
 226
 227 proc tcatch_fork_parent_follow {} {
 228    global gdb_prompt
 229
 230    send_gdb "catch fork\n"
 231    gdb_expect {
 232       -re "Catchpoint .*(fork).*$gdb_prompt $"\
 233                       {pass "explicit parent follow, set tcatch fork"}
 234       -re "$gdb_prompt $" {fail "explicit parent follow, set tcatch fork"}
 235       timeout         {fail "(timeout) explicit parent follow, set tcatch fork"}
 236    }
 237 # ??rehrauer: I don't yet know how to get the id of the tcatch
 238 # via this script, so that I can add a -do list to it.  For now,
 239 # do the follow stuff after the catch happens.
 240
 241    send_gdb "continue\n"
 242    gdb_expect {
 243       -re ".*in _fork_sys.*$gdb_prompt $"\
 244                       {pass "explicit parent follow, tcatch fork"}
 245       -re "$gdb_prompt $" {fail "explicit parent follow, tcatch fork"}
 246       timeout         {fail "(timeout) explicit parent follow, tcatch fork"}
 247    }
 248    send_gdb "set follow parent\n"
 249    gdb_expect {
 250       -re "$gdb_prompt $" {pass "set follow parent"}
 251       timeout         {fail "(timeout) set follow parent"}
 252    }
 253    send_gdb "tbreak 15\n"
 254    gdb_expect {
 255       -re "Breakpoint.*, line 15.*$gdb_prompt $"\
 256                       {pass "set follow parent, tbreak"}
 257       -re "$gdb_prompt $" {fail "set follow parent, tbreak"}
 258       timeout         {fail "(timeout) set follow child, tbreak"}
 259    }
 260    send_gdb "continue\n"
 261    gdb_expect {
 262       -re ".*Detaching after fork from.* at .*15.*$gdb_prompt $"\
 263                       {pass "set follow parent, hit tbreak"}
 264       -re "$gdb_prompt $" {fail "set follow parent, hit tbreak"}
 265       timeout         {fail "(timeout) set follow parent, hit tbreak"}
 266    }
 267    # The child has been detached; allow time for any output it might
 268    # generate to arrive, so that output doesn't get confused with
 269    # any expected debugger output from a subsequent testpoint.
 270    #
 271    exec sleep 1
 272    send_gdb "delete breakpoints\n"
 273    gdb_expect {
 274       -re "Delete all breakpoints.*$" {
 275          send_gdb "y\n"
 276          gdb_expect {
 277             -re "$gdb_prompt $"\
 278                     {pass "set follow parent, cleanup"}
 279             timeout {fail "(timeout) set follow parent, cleanup"}
 280          }
 281       }
 282       -re "$gdb_prompt $" {fail "set follow parent, cleanup"}
 283       timeout         {fail "(timeout) set follow parent, cleanup"}
 284    }
 285 }
 286
 287 proc do_fork_tests {} {
 288    global gdb_prompt
 289
 290    # Verify that help is available for "set follow-fork-mode".
 291    #
 292    send_gdb "help set follow-fork-mode\n"
 293    gdb_expect {
 294       -re "Set debugger response to a program call of fork or vfork..*
 295 A fork or vfork creates a new process.  follow-fork-mode can be:.*
 296 .*parent  - the original process is debugged after a fork.*
 297 .*child   - the new process is debugged after a fork.*
 298 .*ask     - the debugger will ask for one of the above choices.*
 299 For \"parent\" or \"child\", the unfollowed process will run free..*
 300 By default, the debugger will follow the parent process..*$gdb_prompt $"\
 301                       { pass "help set follow" }
 302       -re "$gdb_prompt $" { fail "help set follow" }
 303       timeout         { fail "(timeout) help set follow" }
 304    }
 305
 306    # Verify that we can set follow-fork-mode, using an abbreviation
 307    # for both the flag and its value.
 308    #
 309    send_gdb "set follow ch\n"
 310    send_gdb "show fol\n"
 311    gdb_expect {
 312      -re "Debugger response to a program call of fork or vfork is \"child\".*$gdb_prompt $"\
 313              {pass "set follow, using abbreviations"}
 314      timeout {fail "(timeout) set follow, using abbreviations"}
 315    }
 316
 317    # Verify that we cannot set follow-fork-mode to nonsense.
 318    #
 319    send_gdb "set follow chork\n"
 320    gdb_expect {
 321      -re "Undefined item: \"chork\".*$gdb_prompt $"\
 322                      {pass "set follow to nonsense is prohibited"}
 323      -re "$gdb_prompt $" {fail "set follow to nonsense is prohibited"}
 324      timeout         {fail "(timeout) set follow to nonsense is prohibited"}
 325    }
 326    send_gdb "set follow parent\n"
 327    gdb_expect {
 328      -re "$gdb_prompt $" {pass "set follow to nonsense is prohibited (reset parent)"}
 329      timeout         {fail "set follow to nonsense is prohibited (reset parent)"}
 330    }
 331
 332    # Test the default behaviour, which is to follow the parent of a
 333    # fork, and detach from the child.  Do this without catchpoints.
 334    #
 335    if [runto_main] then { default_fork_parent_follow }
 336
 337    # Test the ability to explicitly follow the parent of a fork, and
 338    # detach from the child.  Do this without catchpoints.
 339    #
 340    if [runto_main] then { explicit_fork_parent_follow }
 341
 342    # Test the ability to follow the child of a fork, and detach from
 343    # the parent.  Do this without catchpoints.
 344    #
 345    if [runto_main] then { explicit_fork_child_follow }
 346
 347    # Test the ability to follow both child and parent of a fork.  Do
 348    # this without catchpoints.
 349    # ??rehrauer: NYI.  Will add testpoints here when implemented.
 350    #
 351
 352    # Test the ability to have the debugger ask the user at fork-time
 353    # whether to follow the parent, child or both.  Do this without
 354    # catchpoints.
 355    # ??rehrauer: NYI.  Will add testpoints here when implemented.
 356    #
 357
 358    # Test the ability to catch a fork, specify that the child be
 359    # followed, and continue.  Make the catchpoint permanent.
 360    #
 361    if [runto_main] then { catch_fork_child_follow }
 362
 363    # Test the ability to catch a fork, specify via a -do clause that
 364    # the parent be followed, and continue.  Make the catchpoint temporary.
 365    #
 366    if [runto_main] then { tcatch_fork_parent_follow }
 367 }
 368
 369 # Start with a fresh gdb
 370
 371 gdb_exit
 372 gdb_start
 373 gdb_reinitialize_dir $srcdir/$subdir
 374 gdb_load ${binfile}
 375
 376
 377 # This is a test of gdb's ability to follow the parent, child or both
 378 # parent and child of a Unix fork() system call.
 379 #
 380 do_fork_tests
 381
 382 return 0