[thirdparty/binutils-gdb.git] / gdb / testsuite / gdb.threads / schedlock.exp

# Copyright (C) 1996, 1997, 2002, 2003, 2007 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/>.

# Please email any bugs, comments, and/or additions to this file to:
# bug-gdb@prep.ai.mit.edu

# This file was written by Daniel Jacobowitz <drow@mvista.com>
# (parts based on pthreads.exp by Fred Fish (fnf@cygnus.com).
#
# This test covers the various forms of "set scheduler-locking".

if $tracelevel then {
	strace $tracelevel
}

set prms_id 0
set bug_id 0

set testfile "schedlock"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}

if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
    return -1
}

# Now we can proceed with the real testing.

proc get_args { } {
  global list_count
  global gdb_prompt

  send_gdb "print args\n"
  gdb_expect {
    -re "\\\$\[0-9\]+ = {(\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+)}.*$gdb_prompt"
      {
	set list_count [expr $list_count + 1]
	pass "listed args ($list_count)"
	return [list $expect_out(1,string) $expect_out(2,string) $expect_out(3,string) $expect_out(4,string) $expect_out(5,string) $expect_out(6,string)]
      }
    -re "$gdb_prompt"
      {
	fail "listed args ($list_count) (unknown output)"
      }
    timeout
      {
	fail "listed args ($list_count) (timeout)"
      }
  }
}

proc stop_process { description } {
  global gdb_prompt

  # For this to work we must be sure to consume the "Continuing."
  # message first, or GDB's signal handler may not be in place.
  after 1000 {send_gdb "\003"}
  gdb_expect {
    -re "Program received signal SIGINT.*$gdb_prompt $"
      {
	pass $description
      }
    timeout
      {
	fail "$description (timeout)"
      }
  }
}

proc get_current_thread { description } {
  global gdb_prompt

  send_gdb "bt\n"
  gdb_expect {
    -re "thread_function \\(arg=0x(\[0-9\])\\).*$gdb_prompt $"
      {
	pass $description
	return $expect_out(1,string)
      }
    -re "$gdb_prompt $"
      {
	fail "$description (unknown output)"
      }
    timeout
      {
	fail "$description (timeout)"
      }
  }
}

proc my_continue { msg } {
  send_gdb "continue\n"
  gdb_expect {
    -re "Continuing"
      { pass "continue ($msg)" }
    timeout
      { fail "continue ($msg) (timeout)" }
  }

  stop_process "stop all threads ($msg)"

  # Make sure we're in one of the non-main looping threads.
  gdb_breakpoint [concat [gdb_get_line_number "schedlock.exp: main loop"] " if arg != 5"]
  gdb_continue_to_breakpoint "return to loop ($msg)"
  delete_breakpoints
}

proc step_ten_loops { msg } {
    global gdb_prompt

    for {set i 0} {[expr $i < 10]} {set i [expr $i + 1]} {
	send_gdb "step\n"
	set other_step 0
	gdb_expect {
	    -re ".*myp\\) \\+\\+;\[\r\n\]+$gdb_prompt $" {
		pass "step to increment ($msg $i)"
	    }
	    -re "$gdb_prompt $" {
		if {$other_step == 0} {
		    set other_step 1
		    send_gdb "step\n"
		    exp_continue
		} else {
		    fail "step to increment ($msg $i)"
		    # FIXME cascade?
		}
	    }
	    timeout {
		fail "step to increment ($msg $i) (timeout)"
	    }
	}
    }
}

# Start with a fresh gdb.

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir

# We'll need this when we send_gdb a ^C to GDB.  Need to do it before we
# run the program and gdb starts saving and restoring tty states.
# On Ultrix, we don't need it and it is really slow (because shell_escape
# doesn't use vfork).
if ![istarget "*-*-ultrix*"] then {
    gdb_test "shell stty intr '^C'" ""
}

gdb_load ${binfile}

gdb_test "set print sevenbit-strings" ""
gdb_test "set width 0" ""

runto_main

# See if scheduler locking is available on this target.
send_gdb "set scheduler-locking off\n"
global gdb_prompt
gdb_expect {
  -re "Target .* cannot support this command"
    {
      unsupported "target does not support scheduler locking"
      return
    }
  -re "$gdb_prompt $"
    {
      pass "scheduler locking set to none"
    }
  timeout
    {
      unsupported "target does not support scheduler locking (timeout)"
      return
    }
}

gdb_breakpoint [gdb_get_line_number "schedlock.exp: last thread start"]
gdb_continue_to_breakpoint "all threads started"

global list_count
set list_count 0

set start_args [get_args]

# First make sure that all threads are alive.
my_continue "initial"

set cont_args [get_args]

for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
  if {[lindex $start_args $i] == [lindex $cont_args $i]} {
    fail "thread $i ran (didn't run)"
  } else {
    pass "thread $i ran"
  }
}

# We can't change threads, unfortunately, in current GDB.  Use
# whichever we stopped in.
set curthread [get_current_thread "find current thread (1)"]


# Test stepping without scheduler locking.
gdb_test "set scheduler-locking off"  ""

step_ten_loops "unlocked"

# Make sure we're still in the same thread.
set newthread [get_current_thread "find current thread (2)"]
if {$curthread == $newthread} {
    pass "step without lock does not change thread"
} else {
    fail "step without lock does not change thread (switched to thread $newthread)"
}

set start_args $cont_args
set cont_args [get_args]

set num_other_threads 0
for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
  if {[lindex $start_args $i] == [lindex $cont_args $i]} {
    if {$i == $curthread} {
      fail "current thread stepped (didn't run)"
    }
  } else {
    if {$i == $curthread} {
	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	    pass "current thread stepped"
	} else {
	    fail "current thread stepped (wrong amount)"
	}
    } else {
      set num_other_threads [expr $num_other_threads + 1]
    }
  }
}
if {$num_other_threads > 0} {
  pass "other threads ran (1)"
} else {
  fail "other threads ran (no other threads ran) (1)"
}

# Test continue with scheduler locking
gdb_test "set scheduler-locking on"  ""

my_continue "with lock"

# Make sure we're still in the same thread.
set newthread [get_current_thread "find current thread (3)"]
if {$curthread == $newthread} {
    pass "continue with lock does not change thread"
} else {
    fail "continue with lock does not change thread (switched to thread $newthread)"
}

set start_args $cont_args
set cont_args [get_args]

for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
  if {[lindex $start_args $i] == [lindex $cont_args $i]} {
    if {$i == $curthread} {
      fail "current thread ran (didn't run)"
    } else {
      pass "other thread $i didn't run"
    }
  } else {
    if {$i == $curthread} {
      pass "current thread ran"
    } else {
      fail "other thread $i didn't run (ran)"
    }
  }
}

# Test stepping with scheduler locking
step_ten_loops "locked"

# Make sure we're still in the same thread.
set newthread [get_current_thread "find current thread (2)"]
if {$curthread == $newthread} {
    pass "step with lock does not change thread"
} else {
    fail "step with lock does not change thread (switched to thread $newthread)"
}

set start_args $cont_args
set cont_args [get_args]

for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
  if {[lindex $start_args $i] == [lindex $cont_args $i]} {
    if {$i == $curthread} {
      fail "current thread stepped locked (didn't run)"
    } else {
      pass "other thread $i didn't run (stepping)"
    }
  } else {
    if {$i == $curthread} {
	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	    pass "current thread stepped locked"
	} else {
	    fail "current thread stepped locked (wrong amount)"
	}
    } else {
      fail "other thread $i didn't run (stepping) (ran)"
    }
  }
}

return 0
Commit	Line	Data
6aba47ca	1	# Copyright (C) 1996, 1997, 2002, 2003, 2007 Free Software Foundation, Inc.
0312286c DJ	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
e22f8b7c	5	# the Free Software Foundation; either version 3 of the License, or
0312286c	6	# (at your option) any later version.
e22f8b7c	7	#
0312286c DJ	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.
e22f8b7c	12	#
0312286c	13	# You should have received a copy of the GNU General Public License
e22f8b7c	14	# along with this program. If not, see <http://www.gnu.org/licenses/>.
0312286c DJ	15
	16	# Please email any bugs, comments, and/or additions to this file to:
	17	# bug-gdb@prep.ai.mit.edu
	18
	19	# This file was written by Daniel Jacobowitz <drow@mvista.com>
	20	# (parts based on pthreads.exp by Fred Fish (fnf@cygnus.com).
	21	#
	22	# This test covers the various forms of "set scheduler-locking".
	23
	24	if $tracelevel then {
	25	strace $tracelevel
	26	}
	27
	28	set prms_id 0
	29	set bug_id 0
	30
	31	set testfile "schedlock"
	32	set srcfile ${testfile}.c
	33	set binfile ${objdir}/${subdir}/${testfile}
	34
b5ab8ff3	35	if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
0312286c DJ	36	return -1
	37	}
	38
	39	# Now we can proceed with the real testing.
	40
	41	proc get_args { } {
	42	global list_count
	43	global gdb_prompt
	44
	45	send_gdb "print args\n"
	46	gdb_expect {
	47	-re "\\\$\[0-9\]+ = {(\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+)}.*$gdb_prompt"
	48	{
	49	set list_count [expr $list_count + 1]
	50	pass "listed args ($list_count)"
	51	return [list $expect_out(1,string) $expect_out(2,string) $expect_out(3,string) $expect_out(4,string) $expect_out(5,string) $expect_out(6,string)]
	52	}
	53	-re "$gdb_prompt"
	54	{
	55	fail "listed args ($list_count) (unknown output)"
	56	}
	57	timeout
	58	{
	59	fail "listed args ($list_count) (timeout)"
	60	}
	61	}
	62	}
	63
	64	proc stop_process { description } {
	65	global gdb_prompt
	66
	67	# For this to work we must be sure to consume the "Continuing."
	68	# message first, or GDB's signal handler may not be in place.
	69	after 1000 {send_gdb "\003"}
	70	gdb_expect {
	71	-re "Program received signal SIGINT.*$gdb_prompt $"
	72	{
	73	pass $description
	74	}
	75	timeout
	76	{
	77	fail "$description (timeout)"
	78	}
	79	}
	80	}
	81
	82	proc get_current_thread { description } {
	83	global gdb_prompt
	84
	85	send_gdb "bt\n"
	86	gdb_expect {
	87	-re "thread_function \\(arg=0x(\[0-9\])\\).*$gdb_prompt $"
	88	{
	89	pass $description
	90	return $expect_out(1,string)
	91	}
	92	-re "$gdb_prompt $"
	93	{
	94	fail "$description (unknown output)"
	95	}
	96	timeout
	97	{
	98	fail "$description (timeout)"
	99	}
100	}
101	}
102
103	proc my_continue { msg } {
104	send_gdb "continue\n"
105	gdb_expect {
106	-re "Continuing"
107	{ pass "continue ($msg)" }
108	timeout
109	{ fail "continue ($msg) (timeout)" }
110	}
111
112	stop_process "stop all threads ($msg)"
113
a25fbfec JJ	114	# Make sure we're in one of the non-main looping threads.
a25fbfec JJ	115	gdb_breakpoint [concat [gdb_get_line_number "schedlock.exp: main loop"] " if arg != 5"]
0312286c DJ	116	gdb_continue_to_breakpoint "return to loop ($msg)"
	117	delete_breakpoints
	118	}
	119
	120	proc step_ten_loops { msg } {
	121	global gdb_prompt
	122
	123	for {set i 0} {[expr $i < 10]} {set i [expr $i + 1]} {
	124	send_gdb "step\n"
	125	set other_step 0
	126	gdb_expect {
	127	-re ".*myp\\) \\+\\+;\[\r\n\]+$gdb_prompt $" {
	128	pass "step to increment ($msg $i)"
	129	}
	130	-re "$gdb_prompt $" {
	131	if {$other_step == 0} {
	132	set other_step 1
	133	send_gdb "step\n"
	134	exp_continue
	135	} else {
	136	fail "step to increment ($msg $i)"
	137	# FIXME cascade?
	138	}
	139	}
	140	timeout {
	141	fail "step to increment ($msg $i) (timeout)"
	142	}
	143	}
	144	}
	145	}
	146
	147	# Start with a fresh gdb.
	148
	149	gdb_exit
	150	gdb_start
	151	gdb_reinitialize_dir $srcdir/$subdir
	152
	153	# We'll need this when we send_gdb a ^C to GDB. Need to do it before we
	154	# run the program and gdb starts saving and restoring tty states.
	155	# On Ultrix, we don't need it and it is really slow (because shell_escape
	156	# doesn't use vfork).
	157	if ![istarget "--ultrix*"] then {
	158	gdb_test "shell stty intr '^C'" ""
	159	}
	160
	161	gdb_load ${binfile}
	162
	163	gdb_test "set print sevenbit-strings" ""
	164	gdb_test "set width 0" ""
	165
	166	runto_main
	167
	168	# See if scheduler locking is available on this target.
	169	send_gdb "set scheduler-locking off\n"
	170	global gdb_prompt
	171	gdb_expect {
	172	-re "Target .* cannot support this command"
	173	{
	174	unsupported "target does not support scheduler locking"
	175	return
	176	}
	177	-re "$gdb_prompt $"
	178	{
	179	pass "scheduler locking set to none"
180	}
181	timeout
182	{
183	unsupported "target does not support scheduler locking (timeout)"
184	return
185	}
186	}
187
188	gdb_breakpoint [gdb_get_line_number "schedlock.exp: last thread start"]
189	gdb_continue_to_breakpoint "all threads started"
190
191	global list_count
192	set list_count 0
193
194	set start_args [get_args]
195
196	# First make sure that all threads are alive.
197	my_continue "initial"
198
199	set cont_args [get_args]
200
201	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
202	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
203	fail "thread $i ran (didn't run)"
204	} else {
205	pass "thread $i ran"
206	}
207	}
208
209	# We can't change threads, unfortunately, in current GDB. Use
210	# whichever we stopped in.
211	set curthread [get_current_thread "find current thread (1)"]
212
213
214
215
216	# Test stepping without scheduler locking.
217	gdb_test "set scheduler-locking off" ""
218
219	step_ten_loops "unlocked"
220
221	# Make sure we're still in the same thread.
222	set newthread [get_current_thread "find current thread (2)"]
223	if {$curthread == $newthread} {
224	pass "step without lock does not change thread"
225	} else {
226	fail "step without lock does not change thread (switched to thread $newthread)"
227	}
228
229	set start_args $cont_args
230	set cont_args [get_args]
231
a25fbfec	232	set num_other_threads 0
0312286c DJ	233	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
	234	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	235	if {$i == $curthread} {
	236	fail "current thread stepped (didn't run)"
0312286c DJ	237	}
	238	} else {
	239	if {$i == $curthread} {
	240	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	241	pass "current thread stepped"
	242	} else {
	243	fail "current thread stepped (wrong amount)"
	244	}
	245	} else {
a25fbfec	246	set num_other_threads [expr $num_other_threads + 1]
0312286c DJ	247	}
	248	}
	249	}
a25fbfec JJ	250	if {$num_other_threads > 0} {
	251	pass "other threads ran (1)"
	252	} else {
	253	fail "other threads ran (no other threads ran) (1)"
	254	}
0312286c DJ	255
	256	# Test continue with scheduler locking
	257	gdb_test "set scheduler-locking on" ""
	258
	259	my_continue "with lock"
	260
	261	# Make sure we're still in the same thread.
	262	set newthread [get_current_thread "find current thread (3)"]
	263	if {$curthread == $newthread} {
	264	pass "continue with lock does not change thread"
	265	} else {
	266	fail "continue with lock does not change thread (switched to thread $newthread)"
	267	}
	268
	269	set start_args $cont_args
	270	set cont_args [get_args]
	271
	272	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
	273	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	274	if {$i == $curthread} {
	275	fail "current thread ran (didn't run)"
	276	} else {
	277	pass "other thread $i didn't run"
	278	}
	279	} else {
	280	if {$i == $curthread} {
	281	pass "current thread ran"
	282	} else {
	283	fail "other thread $i didn't run (ran)"
	284	}
	285	}
	286	}
	287
	288	# Test stepping with scheduler locking
	289	step_ten_loops "locked"
	290
	291	# Make sure we're still in the same thread.
	292	set newthread [get_current_thread "find current thread (2)"]
	293	if {$curthread == $newthread} {
	294	pass "step with lock does not change thread"
	295	} else {
	296	fail "step with lock does not change thread (switched to thread $newthread)"
	297	}
	298
	299	set start_args $cont_args
	300	set cont_args [get_args]
	301
	302	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
	303	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	304	if {$i == $curthread} {
	305	fail "current thread stepped locked (didn't run)"
	306	} else {
	307	pass "other thread $i didn't run (stepping)"
	308	}
	309	} else {
	310	if {$i == $curthread} {
	311	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	312	pass "current thread stepped locked"
	313	} else {
	314	fail "current thread stepped locked (wrong amount)"
	315	}
	316	} else {
	317	fail "other thread $i didn't run (stepping) (ran)"
	318	}
319	}
320	}
321
322	return 0