Live unit test

[lttng-tools.git] / tests / regression / tools / live / test_kernel

#!/bin/bash
#
# Copyright (C) - 2013 Julien Desfossez <julien.desfossez@efficios.com>
#                      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

TEST_DESC="Live - Kernel space tracing"

CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/../../../
SESSIOND_BIN="lttng-sessiond"
RELAYD_BIN="lttng-relayd"
LTTNG_BIN="lttng"
BABELTRACE_BIN="babeltrace"
NR_ITER=1
NR_USEC_WAIT=1
DELAY_USEC=2000000

SESSION_NAME="live"
EVENT_NAME="sched_switch"

TRACE_PATH=$(mktemp -d)

DIR=$(readlink -f $TESTDIR)

source $TESTDIR/utils/utils.sh

function setup_live_tracing()
{
	# Create session with default path
	$TESTDIR/../src/bin/lttng/$LTTNG_BIN create $SESSION_NAME --live $DELAY_USEC \
		-U net://localhost >/dev/null 2>&1

	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$EVENT_NAME" -s $SESSION_NAME -k >/dev/null 2>&1
	$TESTDIR/../src/bin/lttng/$LTTNG_BIN start $SESSION_NAME >/dev/null 2>&1
}

function clean_live_tracing()
{
	$TESTDIR/../src/bin/lttng/$LTTNG_BIN stop $SESSION_NAME >/dev/null 2>&1
	$TESTDIR/../src/bin/lttng/$LTTNG_BIN destroy $SESSION_NAME >/dev/null 2>&1
	rm -rf $TRACE_PATH
}

# Need root access for kernel tracing.
if [ "$(id -u)" == "0" ]; then
	isroot=1
else
	echo "Root access is needed. Skipping all tests."
	exit 0
fi

if [ -z $(pidof lt-$SESSIOND_BIN) ]; then
	$DIR/../src/bin/lttng-sessiond/$SESSIOND_BIN --daemonize --quiet --consumerd32-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd" --consumerd64-path="$DIR/../src/bin/lttng-consumerd/lttng-consumerd"
	if [ $? -eq 1 ]; then
		echo "Fail to start lttng-sessiond"
		exit 1
	fi
	# Wait for sessiond to bootstrap
	sleep 2
fi

opt="-o $TRACE_PATH"
if [ -z $(pidof lt-$RELAYD_BIN) ]; then
	$DIR/../src/bin/lttng-relayd/$RELAYD_BIN $opt >/dev/null 2>&1 &
	if [ $? -eq 1 ]; then
		echo "Fail to start lttng-relayd (opt: $opt)"
		return 1
	fi
fi

setup_live_tracing

# Start the live test
$TESTDIR/regression/tools/live/live_test

clean_live_tracing

# Kill the relayd
PID_RELAYD=`pidof lt-$RELAYD_BIN`
kill $PID_RELAYD >/dev/null 2>&1
if [ $? -eq 1 ]; then
	echo "Kill lttng-relayd (pid: $PID_RELAYD)"
	exit 1
else
	out=1
	while [ -n "$out" ]; do
		out=$(pidof lt-$RELAYD_BIN)
		sleep 0.5
	done
fi

# Kill the sessiond
PID_SESSIOND=`pidof lt-$SESSIOND_BIN`
kill $PID_SESSIOND >/dev/null 2>&1
if [ $? -eq 1 ]; then
	echo "Kill sessiond daemon"
	exit 1
else
	out=1
	while [ -n "$out" ]; do
		out=$(pidof lt-$SESSIOND_BIN)
		sleep 0.5
	done
fi