#!/bin/bash
#
# Copyright (C) 2013 Julien Desfossez <julien.desfossez@efficios.com>
# Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
#
# SPDX-License-Identifier: LGPL-2.1-only

TEST_DESC="Live - Kernel space tracing"

CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/../../../
NR_ITER=1
NR_USEC_WAIT=1
DELAY_USEC=2000000

SESSION_NAME="live"
EVENT_NAME="lttng_test_filter_event"

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

modprobe lttng-test

start_lttng_sessiond_notap
start_lttng_relayd_notap "-o $TRACE_PATH"

setup_live_tracing

echo -n "1" > /proc/lttng-test-filter-event

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

clean_live_tracing

stop_lttng_relayd_notap
stop_lttng_sessiond_notap

modprobe --remove lttng-test