| # Copyright 2005-2012 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 3 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, see <http://www.gnu.org/licenses/>. |
| |
| if { [is_remote target] || ![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 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. |
| |
| set exit_bp_loc [gdb_get_line_number "Set exit breakpoint here."] |
| |
| # Insert a breakpoint at the location provided by the exit_bp_loc global |
| # and resume the execution until hitting that breakpoint. We also make |
| # sure to consume all the expected output from all processes as well, |
| # to make sure it doesn't cause trouble during a subsequent test. |
| |
| proc continue_to_exit_bp_loc {} { |
| global exit_bp_loc decimal gdb_prompt |
| |
| gdb_breakpoint $exit_bp_loc |
| |
| send_gdb "continue\n" |
| |
| # The output from the child processes can be interleaved arbitrarily |
| # with the output from GDB and the parent process. If we don't |
| # consume it all now, it can confuse later interactions. |
| set seen_done 0 |
| set seen_break 0 |
| set seen_prompt 0 |
| set seen_timeout 0 |
| while { ($seen_done < 16 || ! $seen_prompt) && ! $seen_timeout } { |
| # We don't know what order the interesting things will arrive in. |
| # Using a pattern of the form 'x|y|z' instead of -re x ... -re y |
| # ... -re z ensures that expect always chooses the match that |
| # occurs leftmost in the input, and not the pattern appearing |
| # first in the script that occurs anywhere in the input, so that |
| # we don't skip anything. |
| gdb_expect { |
| -re "($decimal done)|(Breakpoint)|($gdb_prompt)" { |
| if {[info exists expect_out(1,string)]} { |
| incr seen_done |
| } elseif {[info exists expect_out(2,string)]} { |
| set seen_break 1 |
| } elseif {[info exists expect_out(3,string)]} { |
| set seen_prompt 1 |
| } |
| array unset expect_out |
| } |
| timeout { set seen_timeout 1 } |
| } |
| } |
| |
| if { $seen_timeout } { |
| fail "run to exit 2 (timeout)" |
| } elseif { ! $seen_prompt } { |
| fail "run to exit 2 (no prompt)" |
| } elseif { ! $seen_break } { |
| fail "run to exit 2 (no breakpoint hit)" |
| } elseif { $seen_done != 16 } { |
| fail "run to exit 2 (missing done messages)" |
| } else { |
| pass "run to exit 2" |
| } |
| } |
| |
| # The inferior program builds a tree of processes by executing a loop |
| # four times, calling fork at each iteration. Thus, at each |
| # iteration, the total number of processes doubles; after four |
| # iterations, we have 16 processes. Each process saves the results |
| # from its 'fork' calls, so we can tell which leaf a given process is |
| # by looking at which forks returned zero and which returned a pid: a |
| # zero means to take the child's branch; a pid means to take the |
| # parent's branch. |
| |
| # First set gdb to follow the child. |
| # The result should be that each of the 4 forks returns zero. |
| |
| runto_main |
| gdb_test_no_output "set follow-fork child" |
| continue_to_exit_bp_loc |
| |
| gdb_test "print pids" "\\$.* = \\{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. |
| |
| runto_main |
| gdb_test_no_output "set follow-fork parent" "" |
| continue_to_exit_bp_loc |
| |
| 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. |
| # |
| |
| # detach-on-fork isn't implemented on hpux. |
| # |
| if {![istarget "*-*-linux*"]} then { |
| continue |
| } |
| |
| # Start with a fresh gdb |
| |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load ${binfile} |
| |
| runto_main |
| gdb_breakpoint $exit_bp_loc |
| |
| gdb_test "help set detach-on-fork" "whether gdb will detach the child.*" \ |
| "help set detach" |
| |
| gdb_test "show detach-on-fork" "on." "show detach default on" |
| |
| gdb_test_no_output "set detach off" "set detach off" |
| |
| # |
| # We will now run every fork up to the exit bp, |
| # eventually winding up with 16 inferiors. |
| # |
| |
| for {set i 1} {$i <= 15} {incr i} { |
| gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit $i" |
| gdb_test "info inferior" " 5 .* 4 .* 3 .* 2 .*" "info inferior $i" |
| gdb_test "inferior $i + 1" "(_dl_sysinfo_int80|fork|__kernel_(v|)syscall).*" \ |
| "inferior $i" |
| } |
| |
| gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 16" |
| gdb_test "info inferiors" " 5 .* 4 .* 3 .* 2 .*" "info inferior 16" |
| gdb_test "inferior 2" " main .*" "restart final" |
| |
| # |
| # Now we should examine all the pids. |
| # |
| |
| # |
| # Test detach inferior |
| # |
| |
| # [assumes we're at #1] |
| gdb_test "detach inferior 2" "Detaching .*" "Detach 2" |
| gdb_test "detach inferior 3" "Detaching .*" "Detach 3" |
| gdb_test "detach inferior 4" "Detaching .*" "Detach 4" |
| gdb_test "detach inferior 5" "Detaching .*" "Detach 5" |
| |
| # |
| # Test kill inferior |
| # |
| |
| gdb_test_no_output "kill inferior 6" "Kill 6" |
| gdb_test "info inferior 6" "<null>.*" "Did kill 6" |
| gdb_test_no_output "kill inferior 7" "Kill 7" |
| gdb_test "info inferior 7" "<null>.*" "Did kill 7" |
| gdb_test_no_output "kill inferior 8" "Kill 8" |
| gdb_test "info inferior 8" "<null>.*" "Did kill 8" |
| gdb_test_no_output "kill inferior 9" "Kill 9" |
| gdb_test "info inferior 9" "<null>.*" "Did kill 9" |
| gdb_test_no_output "kill inferior 10" "Kill 10" |
| gdb_test "info inferior 10" "<null>.*" "Did kill 10" |
| gdb_test_no_output "kill inferior 11" "Kill 11" |
| gdb_test "info inferior 11" "<null>.*" "Did kill 11" |
| gdb_test_no_output "kill inferior 12" "Kill 12" |
| gdb_test "info inferior 12" "<null>.*" "Did kill 12" |
| gdb_test_no_output "kill inferior 13" "Kill 13" |
| gdb_test "info inferior 13" "<null>.*" "Did kill 13" |
| gdb_test_no_output "kill inferior 14" "Kill 14" |
| gdb_test "info inferior 14" "<null>.*" "Did kill 14" |
| gdb_test_no_output "kill inferior 15" "Kill 15" |
| gdb_test "info inferior 15" "<null>.*" "Did kill 15" |
| gdb_test_no_output "kill inferior 16" "Kill 16" |
| gdb_test "info inferior 16" "<null>.*" "Did kill 16" |
| |
| return 0 |
