[lttng-tools.git] / tests / utils / utils.sh

#!/src/bin/bash
#
# Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
#
# This library is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; version 2.1 of the License.
#
# This library 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA

SESSIOND_BIN="lttng-sessiond"
RELAYD_BIN="lttng-relayd"
LTTNG_BIN="lttng"
BABELTRACE_BIN="babeltrace"

# Minimal kernel version supported for session daemon tests
KERNEL_MAJOR_VERSION=2
KERNEL_MINOR_VERSION=6
KERNEL_PATCHLEVEL_VERSION=27

source $TESTDIR/utils/tap/tap.sh

function print_ok ()
{
	# Check if we are a terminal
	if [ -t 1 ]; then
		echo -e "\e[1;32mOK\e[0m"
	else
		echo -e "OK"
	fi
}

function print_fail ()
{
	# Check if we are a terminal
	if [ -t 1 ]; then
		echo -e "\e[1;31mFAIL\e[0m"
	else
		echo -e "FAIL"
	fi
}

function print_test_banner ()
{
	desc="$1"
	diag "$desc"
}

function validate_kernel_version ()
{
	kern_version=($(uname -r | awk -F. '{ printf("%d.%d.%d\n",$1,$2,$3); }' | tr '.' '\n'))
	if [ ${kern_version[0]} -gt $KERNEL_MAJOR_VERSION ]; then
		return 0
	fi
	if [ ${kern_version[1]} -gt $KERNEL_MINOR_VERSION ]; then
		return 0
	fi
	if [ ${kern_version[2]} -ge $KERNEL_PATCHLEVEL_VERSION ]; then
		return 0
	fi
	return 1
}

# Generate a random string
#  $1 = number of characters; defaults to 16
#  $2 = include special characters; 1 = yes, 0 = no; defaults to yes
function randstring()
{
	[ "$2" == "0" ] && CHAR="[:alnum:]" || CHAR="[:graph:]"
	cat /dev/urandom | tr -cd "$CHAR" | head -c ${1:-16}
	echo
}

function lttng_enable_kernel_event
{
	sess_name=$1
	event_name=$2
	channel_name=$3

	if [ -z $event_name ]; then
		# Enable all event if no event name specified
		event_name="-a"
	fi

	if [ -z $channel_name ]; then
		# default channel if none specified
		chan=""
	else
		chan="-c $channel_name"
	fi

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -k >/dev/null 2>&1
	ok $? "Enable kernel event $event_name for session $sess_name"
}

function start_lttng_relayd
{
	local opt=$1

	DIR=$(readlink -f $TESTDIR)

	if [ -z $(pidof lt-$RELAYD_BIN) ]; then
		$DIR/../src/bin/lttng-relayd/$RELAYD_BIN $opt >/dev/null 2>&1 &
		#$DIR/../src/bin/lttng-relayd/$RELAYD_BIN $opt -vvv >>/tmp/relayd.log 2>&1 &
		if [ $? -eq 1 ]; then
			fail "Start lttng-relayd (opt: $opt)"
			return 1
		else
			pass "Start lttng-relayd (opt: $opt)"
		fi
	else
		pass "Start lttng-relayd (opt: $opt)"
	fi
}

function stop_lttng_relayd
{
	PID_RELAYD=`pidof lt-$RELAYD_BIN`

	kill $PID_RELAYD >/dev/null 2>&1

	if [ $? -eq 1 ]; then
		fail "Kill lttng-relayd (pid: $PID_RELAYD)"
		return 1
	else
		out=1
		while [ -n "$out" ]; do
			out=$(pidof lt-$RELAYD_BIN)
			sleep 0.5
		done
		pass "Kill lttng-relayd (pid: $PID_RELAYD)"
		return 0
	fi
}

function start_lttng_sessiond()
{
	if [ -n $TEST_NO_SESSIOND ] && [ "$TEST_NO_SESSIOND" == "1" ]; then
		# Env variable requested no session daemon
		return
	fi

	validate_kernel_version
	if [ $? -ne 0 ]; then
	    fail "Start session daemon"
	    BAIL_OUT "*** Kernel too old for session daemon tests ***"
	fi

	DIR=$(readlink -f $TESTDIR)

	if [ -z $(pidof lt-$SESSIOND_BIN) ]; then
		$DIR/../src/bin/lttng-sessiond/$SESSIOND_BIN --daemonize --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd"
		#$DIR/../src/bin/lttng-sessiond/$SESSIOND_BIN --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --verbose-consumer >>/tmp/sessiond.log 2>&1 &
		status=$?
		ok $status "Start session daemon"
	fi
}

function stop_lttng_sessiond ()
{
	if [ -n $TEST_NO_SESSIOND ] && [ "$TEST_NO_SESSIOND" == "1" ]; then
		# Env variable requested no session daemon
		return
	fi

	PID_SESSIOND=`pidof lt-$SESSIOND_BIN`

	kill $PID_SESSIOND >/dev/null 2>&1

	if [ $? -eq 1 ]; then
		fail "Kill sessions daemon"
		return 1
	else
		out=1
		while [ -n "$out" ]; do
			out=$(pidof lt-$SESSIOND_BIN)
			sleep 0.5
		done
		pass "Kill session daemon"
	fi
}

function create_lttng_session_no_output ()
{
	sess_name=$1

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN create $sess_name --no-output >/dev/null 2>&1
	ok $? "Create session $sess_name in no-output mode"
}

function create_lttng_session ()
{
	sess_name=$1
	trace_path=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN create $sess_name -o $trace_path >/dev/null 2>&1
	ok $? "Create session $sess_name in $trace_path"
}

function enable_ust_lttng_channel()
{
	sess_name=$1
	channel_name=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -u $channel_name -s $sess_name >/dev/null 2>&1
	ok $? "Enable channel $channel_name for session $sess_name"
}

function disable_ust_lttng_channel()
{
	sess_name=$1
	channel_name=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-channel -u $channel_name -s $sess_name >/dev/null 2>&1
	ok $? "Disable channel $channel_name for session $sess_name"
}

function enable_lttng_mmap_overwrite_kernel_channel()
{
	sess_name=$1
	channel_name=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -k --output mmap --overwrite >/dev/null 2>&1
	ok $? "Enable channel $channel_name for session $sess_name"
}

function enable_lttng_mmap_overwrite_ust_channel()
{
	sess_name=$1
	channel_name=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -u --output mmap --overwrite >/dev/null 2>&1
	ok $? "Enable channel $channel_name for session $sess_name"
}

function enable_ust_lttng_event ()
{
	sess_name=$1
	event_name="$2"
	channel_name=$3

	if [ -z $channel_name ]; then
		# default channel if none specified
		chan=""
	else
		chan="-c $channel_name"
	fi

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -u >/dev/null 2>&1
	ok $? "Enable event $event_name for session $sess_name"
}

function enable_jul_lttng_event()
{
	sess_name=$1
	event_name="$2"
	channel_name=$3

	if [ -z $channel_name ]; then
		# default channel if none specified
		chan=""
	else
		chan="-c $channel_name"
	fi

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -j >/dev/null 2>&1
	ok $? "Enable JUL event $event_name for session $sess_name"
}

function enable_ust_lttng_event_filter()
{
	sess_name="$1"
	event_name="$2"
	filter="$3"

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --filter "$filter" >/dev/null 2>&1
	ok $? "Enable event $event_name with filtering for session $sess_name"
}

function enable_ust_lttng_event_loglevel()
{
	sess_name="$1"
	event_name="$2"
	loglevel="$3"

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --loglevel $loglevel >/dev/null 2>&1
	ok $? "Enable event $event_name with loglevel $loglevel"
}

function enable_ust_lttng_event_loglevel_only()
{
	sess_name="$1"
	event_name="$2"
	loglevel="$3"

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --loglevel-only $loglevel >/dev/null 2>&1
	ok $? "Enable event $event_name with loglevel-only $loglevel"
}

function disable_ust_lttng_event ()
{
	sess_name="$1"
	event_name="$2"

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event "$event_name" -s $sess_name -u >/dev/null 2>&1
	ok $? "Disable event $event_name for session $sess_name"
}

function start_lttng_tracing ()
{
	sess_name=$1

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN start $sess_name >/dev/null 2>&1
	ok $? "Start tracing for session $sess_name"
}

function stop_lttng_tracing ()
{
	sess_name=$1

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN stop $sess_name >/dev/null 2>&1
	ok $? "Stop lttng tracing for session $sess_name"
}

function destroy_lttng_session ()
{
	sess_name=$1


	$TESTDIR/../src/bin/lttng/$LTTNG_BIN destroy $sess_name >/dev/null 2>&1
	ok $? "Destroy lttng session $sess_name"
}

function lttng_snapshot_add_output ()
{
	sess_name=$1
	trace_path=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot add-output -s $sess_name file://$trace_path >/dev/null 2>&1
	ok $? "Added snapshot output file://$trace_path"
}

function lttng_snapshot_del_output ()
{
	local sess_name=$1
	local id=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot del-output -s $sess_name $id >/dev/null 2>&1
	ok $? "Deleted snapshot output id $id"
}

function lttng_snapshot_record ()
{
	sess_name=$1
	trace_path=$2

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot record -s $sess_name >/dev/null 2>&1
	ok $? "Snapshot recorded"
}

function trace_matches ()
{
	event_name=$1
	nr_iter=$2
	trace_path=$3

	which $BABELTRACE_BIN >/dev/null
	skip $? -ne 0 "Babeltrace binary not found. Skipping trace matches"

	count=$($BABELTRACE_BIN $trace_path | grep $event_name | wc -l)

	if [ "$count" -ne "$nr_iter" ]; then
		fail "Trace match"
		diag "$count events found in trace"
	else
		pass "Trace match"
	fi
}

function validate_trace
{
	event_name=$1
	trace_path=$2

	which $BABELTRACE_BIN >/dev/null
	if [ $? -ne 0 ]; then
	    skip 0 "Babeltrace binary not found. Skipping trace validation"
	fi

	OLDIFS=$IFS
	IFS=","
	for i in $event_name; do
		traced=$($BABELTRACE_BIN $trace_path 2>/dev/null | grep $i | wc -l)
		if [ "$traced" -ne 0 ]; then
			pass "Validate trace for event $i, $traced events"
		else
			fail "Validate trace for event $i"
			diag "Found $traced occurences of $i"
		fi
	done
	ret=$?
	IFS=$OLDIFS
	return $ret
}
Commit	Line	Data
	1	#!/src/bin/bash
	2	#
	3	# Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
	4	#
	5	# This library is free software; you can redistribute it and/or modify it under
	6	# the terms of the GNU Lesser General Public License as published by the Free
	7	# Software Foundation; version 2.1 of the License.
	8	#
	9	# This library is distributed in the hope that it will be useful, but WITHOUT
	10	# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
	11	# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
	12	# details.
	13	#
	14	# You should have received a copy of the GNU Lesser General Public License
	15	# along with this library; if not, write to the Free Software Foundation, Inc.,
	16	# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	17
	18	SESSIOND_BIN="lttng-sessiond"
	19	RELAYD_BIN="lttng-relayd"
	20	LTTNG_BIN="lttng"
	21	BABELTRACE_BIN="babeltrace"
	22
	23	# Minimal kernel version supported for session daemon tests
	24	KERNEL_MAJOR_VERSION=2
	25	KERNEL_MINOR_VERSION=6
	26	KERNEL_PATCHLEVEL_VERSION=27
	27
	28	source $TESTDIR/utils/tap/tap.sh
	29
	30	function print_ok ()
	31	{
	32	# Check if we are a terminal
	33	if [ -t 1 ]; then
	34	echo -e "\e[1;32mOK\e[0m"
	35	else
	36	echo -e "OK"
	37	fi
	38	}
	39
	40	function print_fail ()
	41	{
	42	# Check if we are a terminal
	43	if [ -t 1 ]; then
	44	echo -e "\e[1;31mFAIL\e[0m"
	45	else
	46	echo -e "FAIL"
	47	fi
	48	}
	49
	50	function print_test_banner ()
	51	{
	52	desc="$1"
	53	diag "$desc"
	54	}
	55
	56	function validate_kernel_version ()
	57	{
	58	kern_version=($(uname -r \| awk -F. '{ printf("%d.%d.%d\n",$1,$2,$3); }' \| tr '.' '\n'))
	59	if [ ${kern_version[0]} -gt $KERNEL_MAJOR_VERSION ]; then
	60	return 0
	61	fi
	62	if [ ${kern_version[1]} -gt $KERNEL_MINOR_VERSION ]; then
	63	return 0
	64	fi
	65	if [ ${kern_version[2]} -ge $KERNEL_PATCHLEVEL_VERSION ]; then
	66	return 0
	67	fi
	68	return 1
	69	}
	70
	71	# Generate a random string
	72	# $1 = number of characters; defaults to 16
	73	# $2 = include special characters; 1 = yes, 0 = no; defaults to yes
	74	function randstring()
	75	{
	76	[ "$2" == "0" ] && CHAR="[:alnum:]" \|\| CHAR="[:graph:]"
	77	cat /dev/urandom \| tr -cd "$CHAR" \| head -c ${1:-16}
	78	echo
	79	}
	80
	81	function lttng_enable_kernel_event
	82	{
	83	sess_name=$1
	84	event_name=$2
	85	channel_name=$3
	86
	87	if [ -z $event_name ]; then
	88	# Enable all event if no event name specified
	89	event_name="-a"
	90	fi
	91
	92	if [ -z $channel_name ]; then
	93	# default channel if none specified
	94	chan=""
	95	else
	96	chan="-c $channel_name"
	97	fi
	98
	99	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -k >/dev/null 2>&1
	100	ok $? "Enable kernel event $event_name for session $sess_name"
	101	}
	102
	103	function start_lttng_relayd
	104	{
	105	local opt=$1
	106
	107	DIR=$(readlink -f $TESTDIR)
	108
	109	if [ -z $(pidof lt-$RELAYD_BIN) ]; then
	110	$DIR/../src/bin/lttng-relayd/$RELAYD_BIN $opt >/dev/null 2>&1 &
	111	#$DIR/../src/bin/lttng-relayd/$RELAYD_BIN $opt -vvv >>/tmp/relayd.log 2>&1 &
	112	if [ $? -eq 1 ]; then
	113	fail "Start lttng-relayd (opt: $opt)"
	114	return 1
	115	else
	116	pass "Start lttng-relayd (opt: $opt)"
	117	fi
	118	else
	119	pass "Start lttng-relayd (opt: $opt)"
	120	fi
	121	}
	122
	123	function stop_lttng_relayd
	124	{
	125	PID_RELAYD=`pidof lt-$RELAYD_BIN`
	126
	127	kill $PID_RELAYD >/dev/null 2>&1
	128
	129	if [ $? -eq 1 ]; then
	130	fail "Kill lttng-relayd (pid: $PID_RELAYD)"
	131	return 1
	132	else
	133	out=1
	134	while [ -n "$out" ]; do
	135	out=$(pidof lt-$RELAYD_BIN)
	136	sleep 0.5
	137	done
	138	pass "Kill lttng-relayd (pid: $PID_RELAYD)"
	139	return 0
	140	fi
	141	}
	142
	143	function start_lttng_sessiond()
	144	{
	145	if [ -n $TEST_NO_SESSIOND ] && [ "$TEST_NO_SESSIOND" == "1" ]; then
	146	# Env variable requested no session daemon
	147	return
	148	fi
	149
	150	validate_kernel_version
	151	if [ $? -ne 0 ]; then
	152	fail "Start session daemon"
	153	BAIL_OUT "* Kernel too old for session daemon tests *"
	154	fi
	155
	156	DIR=$(readlink -f $TESTDIR)
	157
	158	if [ -z $(pidof lt-$SESSIOND_BIN) ]; then
	159	$DIR/../src/bin/lttng-sessiond/$SESSIOND_BIN --daemonize --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd"
	160	#$DIR/../src/bin/lttng-sessiond/$SESSIOND_BIN --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --verbose-consumer >>/tmp/sessiond.log 2>&1 &
	161	status=$?
	162	ok $status "Start session daemon"
	163	fi
	164	}
	165
	166	function stop_lttng_sessiond ()
	167	{
	168	if [ -n $TEST_NO_SESSIOND ] && [ "$TEST_NO_SESSIOND" == "1" ]; then
	169	# Env variable requested no session daemon
	170	return
	171	fi
	172
	173	PID_SESSIOND=`pidof lt-$SESSIOND_BIN`
	174
	175	kill $PID_SESSIOND >/dev/null 2>&1
	176
	177	if [ $? -eq 1 ]; then
	178	fail "Kill sessions daemon"
	179	return 1
	180	else
	181	out=1
	182	while [ -n "$out" ]; do
	183	out=$(pidof lt-$SESSIOND_BIN)
	184	sleep 0.5
	185	done
	186	pass "Kill session daemon"
	187	fi
	188	}
	189
	190	function create_lttng_session_no_output ()
	191	{
	192	sess_name=$1
	193
	194	$TESTDIR/../src/bin/lttng/$LTTNG_BIN create $sess_name --no-output >/dev/null 2>&1
	195	ok $? "Create session $sess_name in no-output mode"
	196	}
	197
	198	function create_lttng_session ()
	199	{
	200	sess_name=$1
	201	trace_path=$2
	202
	203	$TESTDIR/../src/bin/lttng/$LTTNG_BIN create $sess_name -o $trace_path >/dev/null 2>&1
	204	ok $? "Create session $sess_name in $trace_path"
	205	}
	206
	207	function enable_ust_lttng_channel()
	208	{
	209	sess_name=$1
	210	channel_name=$2
	211
	212	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -u $channel_name -s $sess_name >/dev/null 2>&1
	213	ok $? "Enable channel $channel_name for session $sess_name"
	214	}
	215
	216	function disable_ust_lttng_channel()
	217	{
	218	sess_name=$1
	219	channel_name=$2
	220
	221	$TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-channel -u $channel_name -s $sess_name >/dev/null 2>&1
	222	ok $? "Disable channel $channel_name for session $sess_name"
	223	}
	224
	225	function enable_lttng_mmap_overwrite_kernel_channel()
	226	{
	227	sess_name=$1
	228	channel_name=$2
	229
	230	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -k --output mmap --overwrite >/dev/null 2>&1
	231	ok $? "Enable channel $channel_name for session $sess_name"
	232	}
	233
	234	function enable_lttng_mmap_overwrite_ust_channel()
	235	{
	236	sess_name=$1
	237	channel_name=$2
	238
	239	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -u --output mmap --overwrite >/dev/null 2>&1
	240	ok $? "Enable channel $channel_name for session $sess_name"
	241	}
	242
	243	function enable_ust_lttng_event ()
	244	{
	245	sess_name=$1
	246	event_name="$2"
	247	channel_name=$3
	248
	249	if [ -z $channel_name ]; then
	250	# default channel if none specified
	251	chan=""
	252	else
	253	chan="-c $channel_name"
	254	fi
	255
	256	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -u >/dev/null 2>&1
	257	ok $? "Enable event $event_name for session $sess_name"
	258	}
	259
	260	function enable_jul_lttng_event()
	261	{
	262	sess_name=$1
	263	event_name="$2"
	264	channel_name=$3
	265
	266	if [ -z $channel_name ]; then
	267	# default channel if none specified
	268	chan=""
	269	else
	270	chan="-c $channel_name"
	271	fi
	272
	273	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -j >/dev/null 2>&1
	274	ok $? "Enable JUL event $event_name for session $sess_name"
	275	}
	276
	277	function enable_ust_lttng_event_filter()
	278	{
	279	sess_name="$1"
	280	event_name="$2"
	281	filter="$3"
	282
	283	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --filter "$filter" >/dev/null 2>&1
	284	ok $? "Enable event $event_name with filtering for session $sess_name"
	285	}
	286
	287	function enable_ust_lttng_event_loglevel()
	288	{
	289	sess_name="$1"
	290	event_name="$2"
	291	loglevel="$3"
	292
	293	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --loglevel $loglevel >/dev/null 2>&1
	294	ok $? "Enable event $event_name with loglevel $loglevel"
	295	}
	296
	297	function enable_ust_lttng_event_loglevel_only()
	298	{
	299	sess_name="$1"
	300	event_name="$2"
	301	loglevel="$3"
	302
	303	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --loglevel-only $loglevel >/dev/null 2>&1
	304	ok $? "Enable event $event_name with loglevel-only $loglevel"
	305	}
	306
	307	function disable_ust_lttng_event ()
	308	{
	309	sess_name="$1"
	310	event_name="$2"
	311
	312	$TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event "$event_name" -s $sess_name -u >/dev/null 2>&1
	313	ok $? "Disable event $event_name for session $sess_name"
	314	}
	315
	316	function start_lttng_tracing ()
	317	{
	318	sess_name=$1
	319
	320	$TESTDIR/../src/bin/lttng/$LTTNG_BIN start $sess_name >/dev/null 2>&1
	321	ok $? "Start tracing for session $sess_name"
	322	}
	323
	324	function stop_lttng_tracing ()
	325	{
	326	sess_name=$1
	327
	328	$TESTDIR/../src/bin/lttng/$LTTNG_BIN stop $sess_name >/dev/null 2>&1
	329	ok $? "Stop lttng tracing for session $sess_name"
	330	}
	331
	332	function destroy_lttng_session ()
	333	{
	334	sess_name=$1
	335
	336
	337	$TESTDIR/../src/bin/lttng/$LTTNG_BIN destroy $sess_name >/dev/null 2>&1
	338	ok $? "Destroy lttng session $sess_name"
	339	}
	340
	341	function lttng_snapshot_add_output ()
	342	{
	343	sess_name=$1
	344	trace_path=$2
	345
	346	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot add-output -s $sess_name file://$trace_path >/dev/null 2>&1
	347	ok $? "Added snapshot output file://$trace_path"
	348	}
	349
	350	function lttng_snapshot_del_output ()
	351	{
	352	local sess_name=$1
	353	local id=$2
	354
	355	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot del-output -s $sess_name $id >/dev/null 2>&1
	356	ok $? "Deleted snapshot output id $id"
	357	}
	358
	359	function lttng_snapshot_record ()
	360	{
	361	sess_name=$1
	362	trace_path=$2
	363
	364	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot record -s $sess_name >/dev/null 2>&1
	365	ok $? "Snapshot recorded"
	366	}
	367
	368	function trace_matches ()
	369	{
	370	event_name=$1
	371	nr_iter=$2
	372	trace_path=$3
	373
	374	which $BABELTRACE_BIN >/dev/null
	375	skip $? -ne 0 "Babeltrace binary not found. Skipping trace matches"
	376
	377	count=$($BABELTRACE_BIN $trace_path \| grep $event_name \| wc -l)
	378
	379	if [ "$count" -ne "$nr_iter" ]; then
	380	fail "Trace match"
	381	diag "$count events found in trace"
	382	else
	383	pass "Trace match"
	384	fi
	385	}
	386
	387	function validate_trace
	388	{
	389	event_name=$1
	390	trace_path=$2
	391
	392	which $BABELTRACE_BIN >/dev/null
	393	if [ $? -ne 0 ]; then
	394	skip 0 "Babeltrace binary not found. Skipping trace validation"
	395	fi
	396
	397	OLDIFS=$IFS
	398	IFS=","
	399	for i in $event_name; do
	400	traced=$($BABELTRACE_BIN $trace_path 2>/dev/null \| grep $i \| wc -l)
	401	if [ "$traced" -ne 0 ]; then
	402	pass "Validate trace for event $i, $traced events"
	403	else
	404	fail "Validate trace for event $i"
	405	diag "Found $traced occurences of $i"
	406	fi
	407	done
	408	ret=$?
	409	IFS=$OLDIFS
	410	return $ret
	411	}