#!/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
TEST_DESC="UST tracer - Multi-session"

CURDIR=$(dirname $0)/
TESTDIR=$CURDIR/../../..
NR_ITER=100
SESSION_NAME="multi-session"
EVENT_NAME="ust_gen_nevents:tptest"

source $TESTDIR/utils/utils.sh

print_test_banner "$TEST_DESC"

if [ ! -x "$CURDIR/gen-nevents" ]; then
	echo -e "No UST nevents binary detected. Passing."
	exit 0
fi

# MUST set TESTDIR before calling those functions

test_multi_session() {
	local out

	# BEFORE application is spawned
	for i in `seq 0 3`; do
		create_lttng_session "$SESSION_NAME-$i" "$TRACE_PATH/$i"
		enable_ust_lttng_event "$SESSION_NAME-$i" "$EVENT_NAME$i"
		start_lttng_tracing "$SESSION_NAME-$i"
	done

	echo -n "Starting application generating $NR_ITER events... "
	./$CURDIR/gen-nevents $NR_ITER &
	print_ok

	# At least hit one event
	echo -n "Waiting for events to record "
	while [ -n "$(pidof gen-nevents)" ]; do
		echo -n "."
		sleep 0.1
	done
	print_ok

	for i in `seq 0 3`; do
		stop_lttng_tracing "$SESSION_NAME-$i"
		destroy_lttng_session "$SESSION_NAME-$i"
		out=$(babeltrace "$TRACE_PATH/$i" | grep "$EVENT_NAMEi$i" | wc -l)
		if [ $out -ne $NR_ITER ]; then
			echo -n "No event found. Suppose to have at least one... "
			print_fail
			out=1
		else
			echo -n "Found $out event(s) for $SESSION_NAME-$i. Coherent... "
			print_ok
			out=0
		fi
	done

	return $out
}

# MUST set TESTDIR before calling those functions

start_lttng_sessiond

TRACE_PATH=$(mktemp -d)

test_multi_session
out=$?
if [ $out -ne 0 ]; then
	stop_lttng_sessiond
	exit $out
fi

stop_lttng_sessiond

rm -rf "$TRACE_PATH"