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#!/bin/bash
#
# SPDX-FileCopyrightText: 2012 David Goulet <dgoulet@efficios.com>
# SPDX-FileCopyrightText: 2025 Michael Jeanson <mjeanson@efficios.com>
#
# SPDX-License-Identifier: LGPL-2.1-only
TEST_DESC="UST tracer - Multi-session"
CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../../..
NR_ITER=100
NR_SESSION=4
SESSION_NAME="multi-session"
NUM_TESTS=28
TESTAPP_PATH="$TESTDIR/utils/testapp"
TESTAPP_NAME="gen-ust-nevents"
TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME"
TESTAPP_TIMEOUT_SEC=10
EVENT_NAME="tp:tptest"
# shellcheck source-path=SCRIPTDIR/../../..
source "$TESTDIR/utils/utils.sh"
# MUST set TESTDIR before calling those functions
test_multi_session() {
local testapp_pid
local trace_path
local file_testapp_output
local file_sync_after_first
local file_sync_before_last
local file_sync_before_exit_touch
# Prepare temp filenames but don't create them on disk
trace_path=$(mktemp -d -t tmp.test_multi_session_ust.XXXXXX)
file_testapp_output=$(mktemp -u -t "tmp.${FUNCNAME[0]}_testapp_output.XXXXXX")
file_sync_after_first=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_after_first.XXXXXX")
file_sync_before_last=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_before_last.XXXXXX")
file_sync_before_exit_touch=$(mktemp -u -t "tmp.${FUNCNAME[0]}_sync_before_exit_touch.XXXXXX")
diag "Test UST with multiple sessions"
# BEFORE application is spawned
for i in $(seq 1 $NR_SESSION); do
create_lttng_session_ok "$SESSION_NAME-$i" "$trace_path/$i"
enable_ust_lttng_event_ok "$SESSION_NAME-$i" "$EVENT_NAME$i"
start_lttng_tracing_ok "$SESSION_NAME-$i"
done
"$TESTAPP_BIN" -i $NR_ITER -w 0 \
--sync-after-first-event "${file_sync_after_first}" \
--sync-before-last-event "${file_sync_before_last}" \
--sync-before-exit-touch "${file_sync_before_exit_touch}" >"${file_testapp_output}" 2>&1 &
testapp_pid=$!
diag "Launched testapp '$TESTAPP_NAME' (pid: $testapp_pid) to generate $NR_ITER events"
# Wait for the testapp first event
app_alive_wait_for_sync "$TESTAPP_NAME" "$testapp_pid" "$TESTAPP_TIMEOUT_SEC" "$file_testapp_output" "$file_sync_after_first"
# Tell the testapp to continue
touch "${file_sync_before_last}"
# Wait for the testapp to signal completion by creating a file
app_exit_wait_for_sync "$TESTAPP_NAME" "$testapp_pid" "$TESTAPP_TIMEOUT_SEC" "$file_testapp_output" "$file_sync_before_exit_touch"
for i in $(seq 1 $NR_SESSION); do
stop_lttng_tracing_ok "$SESSION_NAME-$i"
destroy_lttng_session_ok "$SESSION_NAME-$i"
trace_match_only "$EVENT_NAME$i" "$NR_ITER" "$trace_path/$i"
done
rm -rf "$trace_path"
rm -f "$file_testapp_output"
rm -f "$file_sync_after_first"
rm -f "$file_sync_before_last"
rm -f "$file_sync_before_exit_touch"
}
plan_tests $NUM_TESTS
print_test_banner "$TEST_DESC"
start_lttng_sessiond
test_multi_session
stop_lttng_sessiond
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