[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 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

# 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
	5	# the Free Software Foundation; either version 2 of the License, or
	6	# (at your option) any later version.
	7	#
	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.
	12	#
	13	# You should have received a copy of the GNU General Public License
	14	# along with this program; if not, write to the Free Software
	15	# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	16
	17	# Please email any bugs, comments, and/or additions to this file to:
	18	# bug-gdb@prep.ai.mit.edu
	19
	20	# This file was written by Daniel Jacobowitz <drow@mvista.com>
	21	# (parts based on pthreads.exp by Fred Fish (fnf@cygnus.com).
	22	#
	23	# This test covers the various forms of "set scheduler-locking".
	24
	25	if $tracelevel then {
	26	strace $tracelevel
	27	}
	28
	29	set prms_id 0
	30	set bug_id 0
	31
	32	set testfile "schedlock"
	33	set srcfile ${testfile}.c
	34	set binfile ${objdir}/${subdir}/${testfile}
	35
b5ab8ff3	36	if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
0312286c DJ	37	return -1
	38	}
	39
	40	# Now we can proceed with the real testing.
	41
	42	proc get_args { } {
	43	global list_count
	44	global gdb_prompt
	45
	46	send_gdb "print args\n"
	47	gdb_expect {
	48	-re "\\\$\[0-9\]+ = {(\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+), (\[0-9\]+)}.*$gdb_prompt"
	49	{
	50	set list_count [expr $list_count + 1]
	51	pass "listed args ($list_count)"
	52	return [list $expect_out(1,string) $expect_out(2,string) $expect_out(3,string) $expect_out(4,string) $expect_out(5,string) $expect_out(6,string)]
	53	}
	54	-re "$gdb_prompt"
	55	{
	56	fail "listed args ($list_count) (unknown output)"
	57	}
	58	timeout
	59	{
	60	fail "listed args ($list_count) (timeout)"
	61	}
	62	}
	63	}
	64
	65	proc stop_process { description } {
	66	global gdb_prompt
	67
	68	# For this to work we must be sure to consume the "Continuing."
	69	# message first, or GDB's signal handler may not be in place.
	70	after 1000 {send_gdb "\003"}
	71	gdb_expect {
	72	-re "Program received signal SIGINT.*$gdb_prompt $"
	73	{
	74	pass $description
	75	}
	76	timeout
	77	{
	78	fail "$description (timeout)"
	79	}
	80	}
	81	}
	82
	83	proc get_current_thread { description } {
	84	global gdb_prompt
	85
	86	send_gdb "bt\n"
	87	gdb_expect {
	88	-re "thread_function \\(arg=0x(\[0-9\])\\).*$gdb_prompt $"
	89	{
	90	pass $description
	91	return $expect_out(1,string)
	92	}
	93	-re "$gdb_prompt $"
	94	{
	95	fail "$description (unknown output)"
	96	}
	97	timeout
	98	{
	99	fail "$description (timeout)"
	100	}
101	}
102	}
103
104	proc my_continue { msg } {
105	send_gdb "continue\n"
106	gdb_expect {
107	-re "Continuing"
108	{ pass "continue ($msg)" }
109	timeout
110	{ fail "continue ($msg) (timeout)" }
111	}
112
113	stop_process "stop all threads ($msg)"
114
a25fbfec JJ	115	# Make sure we're in one of the non-main looping threads.
a25fbfec JJ	116	gdb_breakpoint [concat [gdb_get_line_number "schedlock.exp: main loop"] " if arg != 5"]
0312286c DJ	117	gdb_continue_to_breakpoint "return to loop ($msg)"
	118	delete_breakpoints
	119	}
	120
	121	proc step_ten_loops { msg } {
	122	global gdb_prompt
	123
	124	for {set i 0} {[expr $i < 10]} {set i [expr $i + 1]} {
	125	send_gdb "step\n"
	126	set other_step 0
	127	gdb_expect {
	128	-re ".*myp\\) \\+\\+;\[\r\n\]+$gdb_prompt $" {
	129	pass "step to increment ($msg $i)"
	130	}
	131	-re "$gdb_prompt $" {
	132	if {$other_step == 0} {
	133	set other_step 1
	134	send_gdb "step\n"
	135	exp_continue
	136	} else {
	137	fail "step to increment ($msg $i)"
	138	# FIXME cascade?
	139	}
	140	}
	141	timeout {
	142	fail "step to increment ($msg $i) (timeout)"
	143	}
	144	}
	145	}
	146	}
	147
	148	# Start with a fresh gdb.
	149
	150	gdb_exit
	151	gdb_start
	152	gdb_reinitialize_dir $srcdir/$subdir
	153
	154	# We'll need this when we send_gdb a ^C to GDB. Need to do it before we
	155	# run the program and gdb starts saving and restoring tty states.
	156	# On Ultrix, we don't need it and it is really slow (because shell_escape
	157	# doesn't use vfork).
	158	if ![istarget "--ultrix*"] then {
	159	gdb_test "shell stty intr '^C'" ""
	160	}
	161
	162	gdb_load ${binfile}
	163
	164	gdb_test "set print sevenbit-strings" ""
	165	gdb_test "set width 0" ""
	166
	167	runto_main
	168
	169	# See if scheduler locking is available on this target.
	170	send_gdb "set scheduler-locking off\n"
	171	global gdb_prompt
	172	gdb_expect {
	173	-re "Target .* cannot support this command"
	174	{
	175	unsupported "target does not support scheduler locking"
	176	return
	177	}
	178	-re "$gdb_prompt $"
	179	{
	180	pass "scheduler locking set to none"
181	}
182	timeout
183	{
184	unsupported "target does not support scheduler locking (timeout)"
185	return
186	}
187	}
188
189	gdb_breakpoint [gdb_get_line_number "schedlock.exp: last thread start"]
190	gdb_continue_to_breakpoint "all threads started"
191
192	global list_count
193	set list_count 0
194
195	set start_args [get_args]
196
197	# First make sure that all threads are alive.
198	my_continue "initial"
199
200	set cont_args [get_args]
201
202	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
203	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
204	fail "thread $i ran (didn't run)"
205	} else {
206	pass "thread $i ran"
207	}
208	}
209
210	# We can't change threads, unfortunately, in current GDB. Use
211	# whichever we stopped in.
212	set curthread [get_current_thread "find current thread (1)"]
213
214
215
216
217	# Test stepping without scheduler locking.
218	gdb_test "set scheduler-locking off" ""
219
220	step_ten_loops "unlocked"
221
222	# Make sure we're still in the same thread.
223	set newthread [get_current_thread "find current thread (2)"]
224	if {$curthread == $newthread} {
225	pass "step without lock does not change thread"
226	} else {
227	fail "step without lock does not change thread (switched to thread $newthread)"
228	}
229
230	set start_args $cont_args
231	set cont_args [get_args]
232
a25fbfec	233	set num_other_threads 0
0312286c DJ	234	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
	235	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	236	if {$i == $curthread} {
	237	fail "current thread stepped (didn't run)"
0312286c DJ	238	}
	239	} else {
	240	if {$i == $curthread} {
	241	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	242	pass "current thread stepped"
	243	} else {
	244	fail "current thread stepped (wrong amount)"
	245	}
	246	} else {
a25fbfec	247	set num_other_threads [expr $num_other_threads + 1]
0312286c DJ	248	}
	249	}
	250	}
a25fbfec JJ	251	if {$num_other_threads > 0} {
	252	pass "other threads ran (1)"
	253	} else {
	254	fail "other threads ran (no other threads ran) (1)"
	255	}
0312286c DJ	256
	257	# Test continue with scheduler locking
	258	gdb_test "set scheduler-locking on" ""
	259
	260	my_continue "with lock"
	261
	262	# Make sure we're still in the same thread.
	263	set newthread [get_current_thread "find current thread (3)"]
	264	if {$curthread == $newthread} {
	265	pass "continue with lock does not change thread"
	266	} else {
	267	fail "continue with lock does not change thread (switched to thread $newthread)"
	268	}
	269
	270	set start_args $cont_args
	271	set cont_args [get_args]
	272
	273	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
	274	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	275	if {$i == $curthread} {
	276	fail "current thread ran (didn't run)"
	277	} else {
	278	pass "other thread $i didn't run"
	279	}
	280	} else {
	281	if {$i == $curthread} {
	282	pass "current thread ran"
	283	} else {
	284	fail "other thread $i didn't run (ran)"
	285	}
	286	}
	287	}
	288
	289	# Test stepping with scheduler locking
	290	step_ten_loops "locked"
	291
	292	# Make sure we're still in the same thread.
	293	set newthread [get_current_thread "find current thread (2)"]
	294	if {$curthread == $newthread} {
	295	pass "step with lock does not change thread"
	296	} else {
	297	fail "step with lock does not change thread (switched to thread $newthread)"
	298	}
	299
	300	set start_args $cont_args
	301	set cont_args [get_args]
	302
	303	for {set i 0} {[expr $i < 6]} {set i [expr $i + 1]} {
	304	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	305	if {$i == $curthread} {
	306	fail "current thread stepped locked (didn't run)"
	307	} else {
	308	pass "other thread $i didn't run (stepping)"
	309	}
	310	} else {
	311	if {$i == $curthread} {
	312	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	313	pass "current thread stepped locked"
	314	} else {
	315	fail "current thread stepped locked (wrong amount)"
	316	}
	317	} else {
	318	fail "other thread $i didn't run (stepping) (ran)"
	319	}
320	}
321	}
322
323	return 0