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

# Copyright (C) 1996, 1997, 2002, 2003, 2007, 2008, 2009, 2010
# 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/>.

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

# The number of threads, including the main thread.
set NUM 2

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
  global NUM

  set pattern "(\[0-9\]+)"
  for {set i 1} {[expr $i < $NUM]} {incr i} {
    append pattern ", (\[0-9\]+)"
  }

  send_gdb "print args\n"
  gdb_expect {
    -re "\\\$\[0-9\]+ = {$pattern}.*$gdb_prompt"
      {
	set list_count [expr $list_count + 1]
	pass "listed args ($list_count)"

	set result ""
	for {set i 1} {[expr $i <= $NUM]} {incr i} {
	  lappend result $expect_out($i,string)
	}
	return $result
      }
    -re "$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 != 0"]
  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]

set bad 0
for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} {
  if {[lindex $start_args $i] == [lindex $cont_args $i]} {
    incr bad
  }
}
if { $bad == 0 } {
  pass "all threads alive"
} else {
  fail "all threads alive ($bad/$NUM did not run)"
}

# 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 < $NUM]} {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 - unlocked"
} else {
  fail "other threads ran - unlocked"
}

# 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]

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

# 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]

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

return 0
Commit	Line	Data
4c38e0a4	1	# Copyright (C) 1996, 1997, 2002, 2003, 2007, 2008, 2009, 2010
9b254dd1	2	# Free Software Foundation, Inc.
0312286c DJ	3
	4	# This program is free software; you can redistribute it and/or modify
	5	# it under the terms of the GNU General Public License as published by
e22f8b7c	6	# the Free Software Foundation; either version 3 of the License, or
0312286c	7	# (at your option) any later version.
e22f8b7c	8	#
0312286c DJ	9	# This program is distributed in the hope that it will be useful,
	10	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	# GNU General Public License for more details.
e22f8b7c	13	#
0312286c	14	# You should have received a copy of the GNU General Public License
e22f8b7c	15	# along with this program. If not, see <http://www.gnu.org/licenses/>.
0312286c	16
0312286c DJ	17	# This file was written by Daniel Jacobowitz <drow@mvista.com>
	18	# (parts based on pthreads.exp by Fred Fish (fnf@cygnus.com).
	19	#
	20	# This test covers the various forms of "set scheduler-locking".
	21
	22	if $tracelevel then {
	23	strace $tracelevel
	24	}
	25
0312286c DJ	26
	27	set testfile "schedlock"
	28	set srcfile ${testfile}.c
	29	set binfile ${objdir}/${subdir}/${testfile}
	30
18ecae38 DJ	31	# The number of threads, including the main thread.
	32	set NUM 2
	33
b5ab8ff3	34	if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
0312286c DJ	35	return -1
	36	}
	37
	38	# Now we can proceed with the real testing.
	39
	40	proc get_args { } {
	41	global list_count
	42	global gdb_prompt
e09490f1 DJ	43	global NUM
	44
	45	set pattern "(\[0-9\]+)"
	46	for {set i 1} {[expr $i < $NUM]} {incr i} {
	47	append pattern ", (\[0-9\]+)"
	48	}
0312286c DJ	49
	50	send_gdb "print args\n"
	51	gdb_expect {
e09490f1	52	-re "\\\$\[0-9\]+ = {$pattern}.*$gdb_prompt"
0312286c DJ	53	{
	54	set list_count [expr $list_count + 1]
	55	pass "listed args ($list_count)"
e09490f1 DJ	56
	57	set result ""
	58	for {set i 1} {[expr $i <= $NUM]} {incr i} {
	59	lappend result $expect_out($i,string)
	60	}
	61	return $result
0312286c DJ	62	}
	63	-re "$gdb_prompt"
	64	{
	65	fail "listed args ($list_count) (unknown output)"
	66	}
	67	timeout
	68	{
	69	fail "listed args ($list_count) (timeout)"
	70	}
	71	}
	72	}
	73
	74	proc stop_process { description } {
	75	global gdb_prompt
	76
	77	# For this to work we must be sure to consume the "Continuing."
	78	# message first, or GDB's signal handler may not be in place.
	79	after 1000 {send_gdb "\003"}
	80	gdb_expect {
	81	-re "Program received signal SIGINT.*$gdb_prompt $"
	82	{
	83	pass $description
	84	}
	85	timeout
	86	{
	87	fail "$description (timeout)"
	88	}
	89	}
	90	}
	91
	92	proc get_current_thread { description } {
	93	global gdb_prompt
	94
	95	send_gdb "bt\n"
	96	gdb_expect {
	97	-re "thread_function \\(arg=0x(\[0-9\])\\).*$gdb_prompt $"
	98	{
	99	pass $description
	100	return $expect_out(1,string)
	101	}
	102	-re "$gdb_prompt $"
	103	{
	104	fail "$description (unknown output)"
	105	}
	106	timeout
	107	{
	108	fail "$description (timeout)"
	109	}
	110	}
	111	}
	112
	113	proc my_continue { msg } {
	114	send_gdb "continue\n"
	115	gdb_expect {
	116	-re "Continuing"
	117	{ pass "continue ($msg)" }
	118	timeout
	119	{ fail "continue ($msg) (timeout)" }
	120	}
	121
	122	stop_process "stop all threads ($msg)"
	123
a25fbfec	124	# Make sure we're in one of the non-main looping threads.
18ecae38	125	gdb_breakpoint [concat [gdb_get_line_number "schedlock.exp: main loop"] " if arg != 0"]
0312286c DJ	126	gdb_continue_to_breakpoint "return to loop ($msg)"
	127	delete_breakpoints
	128	}
	129
	130	proc step_ten_loops { msg } {
	131	global gdb_prompt
	132
	133	for {set i 0} {[expr $i < 10]} {set i [expr $i + 1]} {
	134	send_gdb "step\n"
	135	set other_step 0
	136	gdb_expect {
	137	-re ".*myp\\) \\+\\+;\[\r\n\]+$gdb_prompt $" {
	138	pass "step to increment ($msg $i)"
	139	}
	140	-re "$gdb_prompt $" {
	141	if {$other_step == 0} {
	142	set other_step 1
	143	send_gdb "step\n"
	144	exp_continue
	145	} else {
	146	fail "step to increment ($msg $i)"
	147	# FIXME cascade?
	148	}
	149	}
	150	timeout {
	151	fail "step to increment ($msg $i) (timeout)"
	152	}
	153	}
	154	}
	155	}
	156
	157	# Start with a fresh gdb.
	158
	159	gdb_exit
	160	gdb_start
	161	gdb_reinitialize_dir $srcdir/$subdir
	162
	163	# We'll need this when we send_gdb a ^C to GDB. Need to do it before we
	164	# run the program and gdb starts saving and restoring tty states.
	165	# On Ultrix, we don't need it and it is really slow (because shell_escape
	166	# doesn't use vfork).
	167	if ![istarget "--ultrix*"] then {
	168	gdb_test "shell stty intr '^C'" ""
	169	}
	170
	171	gdb_load ${binfile}
	172
	173	gdb_test "set print sevenbit-strings" ""
	174	gdb_test "set width 0" ""
	175
	176	runto_main
	177
	178	# See if scheduler locking is available on this target.
	179	send_gdb "set scheduler-locking off\n"
	180	global gdb_prompt
	181	gdb_expect {
	182	-re "Target .* cannot support this command"
	183	{
	184	unsupported "target does not support scheduler locking"
	185	return
	186	}
	187	-re "$gdb_prompt $"
	188	{
	189	pass "scheduler locking set to none"
190	}
191	timeout
192	{
193	unsupported "target does not support scheduler locking (timeout)"
194	return
195	}
196	}
197
198	gdb_breakpoint [gdb_get_line_number "schedlock.exp: last thread start"]
199	gdb_continue_to_breakpoint "all threads started"
200
201	global list_count
202	set list_count 0
203
204	set start_args [get_args]
205
206	# First make sure that all threads are alive.
207	my_continue "initial"
208
209	set cont_args [get_args]
210
e09490f1	211	set bad 0
18ecae38	212	for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} {
0312286c	213	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
e09490f1	214	incr bad
0312286c DJ	215	}
0312286c DJ	216	}
e09490f1	217	if { $bad == 0 } {
18ecae38 DJ	218	pass "all threads alive"
18ecae38 DJ	219	} else {
e09490f1	220	fail "all threads alive ($bad/$NUM did not run)"
18ecae38	221	}
0312286c DJ	222
	223	# We can't change threads, unfortunately, in current GDB. Use
	224	# whichever we stopped in.
	225	set curthread [get_current_thread "find current thread (1)"]
	226
	227
	228
	229
	230	# Test stepping without scheduler locking.
	231	gdb_test "set scheduler-locking off" ""
	232
	233	step_ten_loops "unlocked"
	234
	235	# Make sure we're still in the same thread.
	236	set newthread [get_current_thread "find current thread (2)"]
	237	if {$curthread == $newthread} {
	238	pass "step without lock does not change thread"
	239	} else {
	240	fail "step without lock does not change thread (switched to thread $newthread)"
	241	}
	242
	243	set start_args $cont_args
	244	set cont_args [get_args]
	245
a25fbfec	246	set num_other_threads 0
18ecae38	247	for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} {
0312286c DJ	248	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	249	if {$i == $curthread} {
	250	fail "current thread stepped (didn't run)"
0312286c DJ	251	}
	252	} else {
	253	if {$i == $curthread} {
	254	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	255	pass "current thread stepped"
	256	} else {
	257	fail "current thread stepped (wrong amount)"
	258	}
	259	} else {
a25fbfec	260	set num_other_threads [expr $num_other_threads + 1]
0312286c DJ	261	}
	262	}
	263	}
a25fbfec	264	if {$num_other_threads > 0} {
18ecae38	265	pass "other threads ran - unlocked"
a25fbfec	266	} else {
18ecae38	267	fail "other threads ran - unlocked"
a25fbfec	268	}
0312286c DJ	269
	270	# Test continue with scheduler locking
	271	gdb_test "set scheduler-locking on" ""
	272
	273	my_continue "with lock"
	274
	275	# Make sure we're still in the same thread.
	276	set newthread [get_current_thread "find current thread (3)"]
	277	if {$curthread == $newthread} {
	278	pass "continue with lock does not change thread"
	279	} else {
	280	fail "continue with lock does not change thread (switched to thread $newthread)"
	281	}
	282
	283	set start_args $cont_args
	284	set cont_args [get_args]
	285
18ecae38 DJ	286	set num_other_threads 0
18ecae38 DJ	287	for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} {
0312286c DJ	288	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	289	if {$i == $curthread} {
	290	fail "current thread ran (didn't run)"
0312286c DJ	291	}
	292	} else {
	293	if {$i == $curthread} {
	294	pass "current thread ran"
	295	} else {
18ecae38	296	incr num_other_threads
0312286c DJ	297	}
	298	}
	299	}
18ecae38 DJ	300	if {$num_other_threads > 0} {
	301	fail "other threads didn't run - locked"
	302	} else {
	303	pass "other threads didn't run - locked"
	304	}
0312286c DJ	305
	306	# Test stepping with scheduler locking
	307	step_ten_loops "locked"
	308
	309	# Make sure we're still in the same thread.
	310	set newthread [get_current_thread "find current thread (2)"]
	311	if {$curthread == $newthread} {
	312	pass "step with lock does not change thread"
	313	} else {
	314	fail "step with lock does not change thread (switched to thread $newthread)"
	315	}
	316
	317	set start_args $cont_args
	318	set cont_args [get_args]
	319
18ecae38 DJ	320	set num_other_threads 0
18ecae38 DJ	321	for {set i 0} {[expr $i < $NUM]} {set i [expr $i + 1]} {
0312286c DJ	322	if {[lindex $start_args $i] == [lindex $cont_args $i]} {
	323	if {$i == $curthread} {
	324	fail "current thread stepped locked (didn't run)"
0312286c DJ	325	}
	326	} else {
	327	if {$i == $curthread} {
	328	if {[lindex $start_args $i] == [expr [lindex $cont_args $i] - 10]} {
	329	pass "current thread stepped locked"
	330	} else {
	331	fail "current thread stepped locked (wrong amount)"
	332	}
	333	} else {
18ecae38	334	incr num_other_threads
0312286c DJ	335	}
	336	}
	337	}
18ecae38 DJ	338	if {$num_other_threads > 0} {
	339	fail "other threads didn't run - step locked"
	340	} else {
	341	pass "other threads didn't run - step locked"
	342	}
0312286c DJ	343
0312286c DJ	344	return 0