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#!/bin/bash
#
# SPDX-FileCopyrightText: 2012 David Goulet <dgoulet@efficios.com>
#
# SPDX-License-Identifier: LGPL-2.1-only
NUM_PROCESS=30
TEST_DESC="UST tracer - Generate $NUM_PROCESS process"
CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../../..
NR_ITER=-1 # infinite loop
NR_USEC_WAIT=1000000
TESTAPP_PATH="$TESTDIR/utils/testapp"
TESTAPP_NAME="gen-ust-events"
TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
SESSION_NAME="ust-nprocesses"
EVENT_NAME="tp:tptest"
NUM_TESTS=9
APP_PIDS=()
# shellcheck source-path=SCRIPTDIR/../../../
source "${TESTDIR}/utils/utils.sh"
if [ ! -x "$TESTAPP_BIN" ]; then
BAIL_OUT "No UST $TESTAPP_BIN binary detected."
fi
# MUST set TESTDIR before calling those functions
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
# shellcheck disable=SC2119
start_lttng_sessiond
# Start tests. Each is an infinite tracing loop.
file_sync_after_first=$(mktemp -u -t tmp.test_nprocesses_sync_after_first.XXXXXX)
file_sync_before_last=$(mktemp -u -t tmp.test_nprocesses_sync_before_last.XXXXXX)
diag "Starting $NUM_PROCESS test applications"
# shellcheck disable=SC2034
for i in $(seq 1 $NUM_PROCESS)
do
$TESTAPP_BIN -i $NR_ITER -w $NR_USEC_WAIT \
--sync-after-first-event "${file_sync_after_first}" \
--sync-before-last-event "${file_sync_before_last}" >/dev/null 2>&1 &
APP_PIDS+=(${!})
done
diag "Waiting for applications to be registered to sessiond"
reg_app_count=0
while [ $reg_app_count -ne $NUM_PROCESS ]; do
listing=$("${TESTDIR}/../src/bin/lttng/${LTTNG_BIN}" list -u)
reg_app_count=$(echo -n "${listing}" | sed "s#$TESTAPP_BIN#$TESTAPP_BIN\n#g" | grep -c "$TESTAPP_BIN")
done
pass "All applications are registered to sessiond"
TRACE_PATH=$(mktemp -d -t tmp.test_nprocesses_trace_path.XXXXXX)
create_lttng_session_ok $SESSION_NAME "${TRACE_PATH}"
enable_ust_lttng_event_ok $SESSION_NAME $EVENT_NAME
start_lttng_tracing_ok $SESSION_NAME
touch "${file_sync_before_last}"
# We don't validate whether the applications have traced here, rather
# just that they registered to sessiond (above).
stop_lttng_tracing_ok $SESSION_NAME
destroy_lttng_session_ok $SESSION_NAME
#TODO: add trace validation.
rm -rf "${TRACE_PATH}"
diag "Stopping all spawned applications"
kill "${APP_PIDS[@]}"
wait "${APP_PIDS[@]}" 2>/dev/null
APP_PIDS=()
pass "Stopped all spawned applications"
rm -f "${file_sync_after_first}"
rm -f "${file_sync_before_last}"
# shellcheck disable=SC2119
stop_lttng_sessiond
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