368 lines
13 KiB
Plaintext
368 lines
13 KiB
Plaintext
# Copyright 1997, 1999 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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# Please email any bugs, comments, and/or additions to this file to:
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# bug-gdb@prep.ai.mit.edu
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if $tracelevel then {
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strace $tracelevel
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}
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if { ![isnative] } then {
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continue
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}
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set prms_id 0
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set bug_id 0
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set testfile "foll-fork"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
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}
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# Until "set follow-fork-mode" and "catch fork" are implemented on
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# other targets...
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#
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if ![istarget "hppa*-hp-hpux*"] then {
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continue
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}
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proc default_fork_parent_follow {} {
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global gdb_prompt
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send_gdb "show follow\n"
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gdb_expect {
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-re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
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{pass "default show parent follow, no catchpoints"}
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-re "$gdb_prompt $" {fail "default show parent follow, no catchpoints"}
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timeout {fail "(timeout) default show parent follow, no catchpoints"}
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}
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send_gdb "next 2\n"
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gdb_expect {
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-re "Detaching after fork from.*$gdb_prompt $"\
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{pass "default parent follow, no catchpoints"}
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-re "$gdb_prompt $" {fail "default parent follow, no catchpoints"}
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timeout {fail "(timeout) default parent follow, no catchpoints" }
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}
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proc explicit_fork_parent_follow {} {
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global gdb_prompt
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send_gdb "set follow parent\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow parent"}
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timeout {fail "(timeout) set follow parent"}
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}
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send_gdb "show follow\n"
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gdb_expect {
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-re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
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{pass "explicit show parent follow, no catchpoints"}
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-re "$gdb_prompt $" {fail "explicit show parent follow, no catchpoints"}
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timeout {fail "(timeout) explicit show parent follow, no catchpoints"}
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}
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send_gdb "next 2\n"
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gdb_expect {
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-re "Detaching after fork from.*$gdb_prompt $"\
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{pass "explicit parent follow, no catchpoints"}
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-re "$gdb_prompt $" {fail "explicit parent follow, no catchpoints"}
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timeout {fail "(timeout) explicit parent follow, no catchpoints"}
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}
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proc explicit_fork_child_follow {} {
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global gdb_prompt
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send_gdb "set follow child\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow child"}
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timeout {fail "(timeout) set follow child"}
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}
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send_gdb "show follow\n"
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gdb_expect {
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-re "Debugger response to a program call of fork or vfork is \"child\"..*$gdb_prompt $"\
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{pass "explicit show child follow, no catchpoints"}
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-re "$gdb_prompt $" {fail "explicit show child follow, no catchpoints"}
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timeout {fail "(timeout) explicit show child follow, no catchpoints"}
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}
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send_gdb "next 2\n"
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gdb_expect {
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-re "Detaching from program:.*Attaching after fork to.*$gdb_prompt $"\
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{pass "explicit child follow, no catchpoints"}
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-re "$gdb_prompt $" {fail "explicit child follow, no catchpoints"}
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timeout {fail "(timeout) explicit child follow, no catchpoints"}
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any gdb_expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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}
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proc catch_fork_child_follow {} {
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global gdb_prompt
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send_gdb "catch fork\n"
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gdb_expect {
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-re "Catchpoint .*(fork).*$gdb_prompt $"\
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{pass "explicit child follow, set catch fork"}
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-re "$gdb_prompt $" {fail "explicit child follow, set catch fork"}
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timeout {fail "(timeout) explicit child follow, set catch fork"}
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}
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# Verify that the catchpoint is mentioned in an "info breakpoints",
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# and further that the catchpoint mentions no process id.
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#
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send_gdb "info breakpoints\n"
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gdb_expect {
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-re ".*catch fork.*keep y.*$gdb_prompt $"\
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{pass "info shows catchpoint without pid"}
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-re ".*catch fork.*process .*$gdb_prompt $"\
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{fail "info shows catchpoint without pid"}
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-re "$gdb_prompt $" {fail "info shows catchpoint without pid"}
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timeout {fail "(timeout) info shows catchpoint without pid"}
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}
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send_gdb "continue\n"
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gdb_expect {
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-re "Catchpoint.*(forked process.*),.*in _fork_sys.*$gdb_prompt $"\
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{pass "explicit child follow, catch fork"}
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-re "$gdb_prompt $" {fail "explicit child follow, catch fork"}
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timeout {fail "(timeout) explicit child follow, catch fork"}
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}
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# Verify that the catchpoint is mentioned in an "info breakpoints",
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# and further that the catchpoint managed to capture a process id.
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#
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send_gdb "info breakpoints\n"
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gdb_expect {
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-re ".*catch fork .*process \[0-9\]+.*$gdb_prompt $"\
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{pass "info shows catchpoint pid"}
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-re "$gdb_prompt $" {fail "info shows catchpoint pid"}
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timeout {fail "(timeout) info shows catchpoint pid"}
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}
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send_gdb "set follow child\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow child"}
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timeout {fail "(timeout) set follow child"}
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}
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send_gdb "tbreak 24\n"
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gdb_expect {
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-re "Breakpoint.*, line 24.*$gdb_prompt $"\
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{pass "set follow child, tbreak"}
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-re "$gdb_prompt $" {fail "set follow child, tbreak"}
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timeout {fail "(timeout) set follow child, tbreak"}
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}
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send_gdb "continue\n"
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gdb_expect {
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-re ".*Detaching from program:.*Attaching after fork to.* at .*24.*$gdb_prompt $"\
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{pass "set follow child, hit tbreak"}
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-re "$gdb_prompt $" {fail "set follow child, hit tbreak"}
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timeout {fail "(timeout) set follow child, hit tbreak"}
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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send_gdb "delete breakpoints\n"
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gdb_expect {
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-re "Delete all breakpoints.*$" {
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send_gdb "y\n"
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gdb_expect {
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-re "$gdb_prompt $"\
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{pass "set follow child, cleanup"}
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timeout {fail "(timeout) set follow child, cleanup"}
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}
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}
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-re "$gdb_prompt $" {fail "set follow child, cleanup"}
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timeout {fail "(timeout) set follow child, cleanup"}
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}
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}
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proc tcatch_fork_parent_follow {} {
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global gdb_prompt
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send_gdb "catch fork\n"
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gdb_expect {
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-re "Catchpoint .*(fork).*$gdb_prompt $"\
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{pass "explicit parent follow, set tcatch fork"}
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-re "$gdb_prompt $" {fail "explicit parent follow, set tcatch fork"}
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timeout {fail "(timeout) explicit parent follow, set tcatch fork"}
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}
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# ??rehrauer: I don't yet know how to get the id of the tcatch
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# via this script, so that I can add a -do list to it. For now,
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# do the follow stuff after the catch happens.
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send_gdb "continue\n"
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gdb_expect {
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-re ".*in _fork_sys.*$gdb_prompt $"\
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{pass "explicit parent follow, tcatch fork"}
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-re "$gdb_prompt $" {fail "explicit parent follow, tcatch fork"}
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timeout {fail "(timeout) explicit parent follow, tcatch fork"}
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}
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send_gdb "set follow parent\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow parent"}
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timeout {fail "(timeout) set follow parent"}
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}
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send_gdb "tbreak 24\n"
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gdb_expect {
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-re "Breakpoint.*, line 24.*$gdb_prompt $"\
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{pass "set follow parent, tbreak"}
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-re "$gdb_prompt $" {fail "set follow parent, tbreak"}
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timeout {fail "(timeout) set follow child, tbreak"}
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}
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send_gdb "continue\n"
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gdb_expect {
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-re ".*Detaching after fork from.* at .*24.*$gdb_prompt $"\
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{pass "set follow parent, hit tbreak"}
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-re "$gdb_prompt $" {fail "set follow parent, hit tbreak"}
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timeout {fail "(timeout) set follow parent, hit tbreak"}
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}
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# The child has been detached; allow time for any output it might
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# generate to arrive, so that output doesn't get confused with
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# any expected debugger output from a subsequent testpoint.
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#
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exec sleep 1
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send_gdb "delete breakpoints\n"
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gdb_expect {
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-re "Delete all breakpoints.*$" {
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send_gdb "y\n"
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gdb_expect {
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-re "$gdb_prompt $"\
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{pass "set follow parent, cleanup"}
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timeout {fail "(timeout) set follow parent, cleanup"}
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}
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}
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-re "$gdb_prompt $" {fail "set follow parent, cleanup"}
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timeout {fail "(timeout) set follow parent, cleanup"}
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}
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}
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proc do_fork_tests {} {
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global gdb_prompt
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# Verify that help is available for "set follow-fork-mode".
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#
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send_gdb "help set follow-fork-mode\n"
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gdb_expect {
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-re "Set debugger response to a program call of fork or vfork..*
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A fork or vfork creates a new process. follow-fork-mode can be:.*
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.*parent - the original process is debugged after a fork.*
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.*child - the new process is debugged after a fork.*
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.*ask - the debugger will ask for one of the above choices.*
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For \"parent\" or \"child\", the unfollowed process will run free..*
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By default, the debugger will follow the parent process..*$gdb_prompt $"\
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{ pass "help set follow" }
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-re "$gdb_prompt $" { fail "help set follow" }
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timeout { fail "(timeout) help set follow" }
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}
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# Verify that we can set follow-fork-mode, using an abbreviation
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# for both the flag and its value.
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#
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send_gdb "set follow ch\n"
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send_gdb "show fol\n"
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gdb_expect {
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-re "Debugger response to a program call of fork or vfork is \"child\".*$gdb_prompt $"\
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{pass "set follow, using abbreviations"}
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timeout {fail "(timeout) set follow, using abbreviations"}
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}
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# Verify that we cannot set follow-fork-mode to nonsense.
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#
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send_gdb "set follow chork\n"
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gdb_expect {
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-re "Undefined item: \"chork\".*$gdb_prompt $"\
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{pass "set follow to nonsense is prohibited"}
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-re "$gdb_prompt $" {fail "set follow to nonsense is prohibited"}
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timeout {fail "(timeout) set follow to nonsense is prohibited"}
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}
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send_gdb "set follow parent\n"
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gdb_expect {
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-re "$gdb_prompt $" {pass "set follow to nonsense is prohibited (reset parent)"}
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timeout {fail "set follow to nonsense is prohibited (reset parent)"}
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}
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# Test the default behaviour, which is to follow the parent of a
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# fork, and detach from the child. Do this without catchpoints.
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#
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if [runto_main] then { default_fork_parent_follow }
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# Test the ability to explicitly follow the parent of a fork, and
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# detach from the child. Do this without catchpoints.
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#
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if [runto_main] then { explicit_fork_parent_follow }
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# Test the ability to follow the child of a fork, and detach from
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# the parent. Do this without catchpoints.
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#
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if [runto_main] then { explicit_fork_child_follow }
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# Test the ability to follow both child and parent of a fork. Do
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# this without catchpoints.
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# ??rehrauer: NYI. Will add testpoints here when implemented.
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#
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# Test the ability to have the debugger ask the user at fork-time
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# whether to follow the parent, child or both. Do this without
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# catchpoints.
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# ??rehrauer: NYI. Will add testpoints here when implemented.
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#
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# Test the ability to catch a fork, specify that the child be
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# followed, and continue. Make the catchpoint permanent.
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#
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if [runto_main] then { catch_fork_child_follow }
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# Test the ability to catch a fork, specify via a -do clause that
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# the parent be followed, and continue. Make the catchpoint temporary.
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#
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if [runto_main] then { tcatch_fork_parent_follow }
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}
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# Start with a fresh gdb
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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# This is a test of gdb's ability to follow the parent, child or both
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# parent and child of a Unix fork() system call.
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#
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do_fork_tests
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return 0
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