2005-11-28 Michael Snyder <msnyder@redhat.com>

	* gdb.base/multi-forks.c: New file.
	* gdb.base/multi-forks.exp: New file.  Test debugging of
	multiple forked inferior processes (don't detach when inferior
	calls fork).

3 files changed, 257 insertions, 1 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index aaa7cf4..21f4e4e 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,6 +1,15 @@
+2005-11-28  Michael Snyder  <msnyder@redhat.com>
+
+	* gdb.base/multi-forks.c: New file.
+	* gdb.base/multi-forks.exp: New file.  Test debugging of 
+	multiple forked inferior processes (don't detach when inferior
+	calls fork).
+
 2005-11-25  Michael Snyder  <msnyder@redhat.com>
 
-	* gdb.base/foll-fork.exp: Add PASS cases for linux.
+	* gdb.base/foll-fork.exp: Run if istarget linux.
+	Add PASS cases for linux.
+	* gdb.base/foll-vfork.exp: Run if istarget linux.
 
 2005-11-11  Stephane Carrez  <stcarrez@nerim.fr>
 
diff --git a/gdb/testsuite/gdb.base/multi-forks.c b/gdb/testsuite/gdb.base/multi-forks.c
new file mode 100644
index 0000000..2061067
--- /dev/null
+++ b/gdb/testsuite/gdb.base/multi-forks.c
@@ -0,0 +1,18 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+pid_t pids[4];
+
+main()
+{
+  int i;
+
+  for (i = 0; i < 4; i++)
+    pids [i] = fork ();
+
+  printf ("%d ready\n", getpid ());
+  sleep (2);
+  printf ("%d done\n", getpid ());
+  exit (0);	/* Set exit breakpoint here.  */
+}
diff --git a/gdb/testsuite/gdb.base/multi-forks.exp b/gdb/testsuite/gdb.base/multi-forks.exp
new file mode 100644
index 0000000..144105a
--- /dev/null
+++ b/gdb/testsuite/gdb.base/multi-forks.exp
@@ -0,0 +1,229 @@
+#   Copyright 2005 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.  */
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-gdb@prep.ai.mit.edu
+
+if $tracelevel then {
+	strace $tracelevel
+	}
+
+if { ![isnative] } 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}] != "" } {
+     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
+}
+
+# Until "set follow-fork-mode" and "catch fork" are implemented on
+# other targets...
+#
+if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-pc-linux*"]} then {
+    continue
+}
+
+# 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.
+#
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 1"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 1"
+# FIXME check pids, info fork again
+gdb_test "restart 1" "_dl_sysinfo_int80.*" "restart 1"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 2"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 2"
+# FIXME check pids, info fork again
+gdb_test "restart 2" "_dl_sysinfo_int80.*" "restart 2"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 3"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 3"
+# FIXME check pids, info fork again
+gdb_test "restart 3" "_dl_sysinfo_int80.*" "restart 3"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 4"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 4"
+# FIXME check pids, info fork again
+gdb_test "restart 4" "_dl_sysinfo_int80.*" "restart 4"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 5"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 5"
+# FIXME check pids, info fork again
+gdb_test "restart 5" "_dl_sysinfo_int80.*" "restart 5"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 6"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 6"
+# FIXME check pids, info fork again
+gdb_test "restart 6" "_dl_sysinfo_int80.*" "restart 6"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 7"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 7"
+# FIXME check pids, info fork again
+gdb_test "restart 7" "_dl_sysinfo_int80.*" "restart 7"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 8"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 8"
+# FIXME check pids, info fork again
+gdb_test "restart 8" "_dl_sysinfo_int80.*" "restart 8"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 9"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 9"
+# FIXME check pids, info fork again
+gdb_test "restart 9" "_dl_sysinfo_int80.*" "restart 9"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 10"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 10"
+# FIXME check pids, info fork again
+gdb_test "restart 10" "_dl_sysinfo_int80.*" "restart 10"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 11"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 11"
+# FIXME check pids, info fork again
+gdb_test "restart 11" "_dl_sysinfo_int80.*" "restart 11"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 12"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 12"
+# FIXME check pids, info fork again
+gdb_test "restart 12" "_dl_sysinfo_int80.*" "restart 12"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 13"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 13"
+# FIXME check pids, info fork again
+gdb_test "restart 13" "_dl_sysinfo_int80.*" "restart 13"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 14"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 14"
+# FIXME check pids, info fork again
+gdb_test "restart 14" "_dl_sysinfo_int80.*" "restart 14"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 15"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 15"
+# FIXME check pids, info fork again
+gdb_test "restart 15" "_dl_sysinfo_int80.*" "restart 15"
+
+gdb_test "continue" "Breakpoint .* main .*exit.*" "Run to exit 16"
+gdb_test "info fork" " 4 .* 3 .* 2 .* 1 .*" "info fork 16"
+# FIXME check pids, info fork again
+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- 5" "" "Delete 5"
+gdb_test "delete- 6" "" "Delete 6"
+gdb_test "delete- 7" "" "Delete 7"
+gdb_test "delete- 8" "" "Delete 8"
+gdb_test "delete- 9" "" "Delete 9"
+gdb_test "delete- 10" "" "Delete 10"
+gdb_test "delete- 11" "" "Delete 11"
+gdb_test "delete- 12" "" "Delete 12"
+gdb_test "delete- 13" "" "Delete 13"
+gdb_test "delete- 14" "" "Delete 14"
+gdb_test "delete- 15" "" "Delete 15"
+
+
+
+return 0