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# Copyright 2005, 2006 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
if $tracelevel then {
strace $tracelevel
}
if { ![isnative] } then {
continue
}
# Until "set follow-fork-mode" and "catch fork" are implemented on
# other targets...
#
if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-*-linux*"]} then {
continue
}
set prms_id 0
set bug_id 0
set testfile "multi-forks"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
untested multi-forks.exp
return -1
}
# Start with a fresh gdb
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
global gdb_prompt
# This is a test of gdb's ability to follow the parent, child or both
# parent and child of multiple Unix fork() system calls.
#
# Inferior program calls fork 4 times. Since each fork
# calls fork 4 times, there will be 16 forks. Each fork
# saves the return values of its own 4 fork calls.
# First set gdb to follow the child.
# The result should be that each of the 4 forks returns zero.
runto_main
set exit_bp_loc [gdb_get_line_number "Set exit breakpoint here."]
gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" "Break at exit"
gdb_test "set follow child" "" ""
send_gdb "continue\n"
gdb_expect {
-re ".*Break.* main .*$gdb_prompt.*$" {}
-re ".*$gdb_prompt $" {fail "run to exit 1"}
default {fail "run to exit 1 (timeout)"}
}
gdb_test "print pids" "\\$.* = \\{0, 0, 0, 0\\}.*" "follow child, print pids"
# Now set gdb to follow the parent.
# Result should be that none of the 4 forks returns zero.
delete_breakpoints
runto_main
gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" "Break at exit"
gdb_test "set follow parent" "" ""
send_gdb "continue\n"
gdb_expect {
-re ".*Break.* main .*$gdb_prompt.*$" {}
-re ".*$gdb_prompt $" {fail "run to exit 2"}
default {fail "run to exit 2 (timeout)"}
}
gdb_test "print pids\[0\]==0 || pids\[1\]==0 || pids\[2\]==0 || pids\[3\]==0" \
" = 0" "follow parent, print pids"
#
# Now test with detach-on-fork off.
#
runto_main
gdb_test "break $exit_bp_loc" "Breakpoint.* at .*" ""
gdb_test "help set detach-on-fork" "whether gdb will detach the child.*" \
"help set detach"
gdb_test "show detach-on-fork" "on." "show detach default on"
gdb_test "set detach off" "" "set detach off"
#
# We will now run every fork up to the exit bp,
# eventually winding up with 16 forks.
#
for {set i 1} {$i <= 15} {incr i} {
gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit $i"
gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork $i"
gdb_test "restart $i" "(_dl_sysinfo_int80|fork|__kernel_vsyscall).*" \
"restart $i"
}
gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 16"
gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 16"
gdb_test "restart 0" " main .*" "restart final"
#
# Now we should examine all the pids.
#
#
# Test detach-fork
#
# [assumes we're at #0]
gdb_test "detach-fork 1" "Detached .*" "Detach 1"
gdb_test "detach-fork 2" "Detached .*" "Detach 2"
gdb_test "detach-fork 3" "Detached .*" "Detach 3"
gdb_test "detach-fork 4" "Detached .*" "Detach 4"
#
# Test delete fork
#
gdb_test "delete fork 5" "" "Delete 5"
gdb_test "info fork 5" "No fork number 5." "Did delete 5"
gdb_test "delete fork 6" "" "Delete 6"
gdb_test "info fork 6" "No fork number 6." "Did delete 6"
gdb_test "delete fork 7" "" "Delete 7"
gdb_test "info fork 7" "No fork number 7." "Did delete 7"
gdb_test "delete fork 8" "" "Delete 8"
gdb_test "info fork 8" "No fork number 8." "Did delete 8"
gdb_test "delete fork 9" "" "Delete 9"
gdb_test "info fork 9" "No fork number 9." "Did delete 9"
gdb_test "delete fork 10" "" "Delete 10"
gdb_test "info fork 10" "No fork number 10." "Did delete 10"
gdb_test "delete fork 11" "" "Delete 11"
gdb_test "info fork 11" "No fork number 11." "Did delete 11"
gdb_test "delete fork 12" "" "Delete 12"
gdb_test "info fork 12" "No fork number 12." "Did delete 12"
gdb_test "delete fork 13" "" "Delete 13"
gdb_test "info fork 13" "No fork number 13." "Did delete 13"
gdb_test "delete fork 14" "" "Delete 14"
gdb_test "info fork 14" "No fork number 14." "Did delete 14"
gdb_test "delete fork 15" "" "Delete 15"
gdb_test "info fork 15" "No fork number 15." "Did delete 15"
return 0
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