Tests: Add test to check shared-memory FD leaks after relayd dies

[lttng-tools.git] / tests / regression / ust / nprocesses / test_nprocesses

diff --git a/tests/regression/ust/nprocesses/test_nprocesses b/tests/regression/ust/nprocesses/test_nprocesses
index 1660c219bae9a3a0e052b7f87e655a760a9d68cc..cd897d42b1f58cab69d809e3ee217cb35fb21745 100755 (executable)
--- a/tests/regression/ust/nprocesses/test_nprocesses
+++ b/tests/regression/ust/nprocesses/test_nprocesses
@@ -1,35 +1,26 @@
 #!/bin/bash
 #
-# Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
+# 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
+# SPDX-License-Identifier: LGPL-2.1-only
+
 NUM_PROCESS=30
 TEST_DESC="UST tracer - Generate $NUM_PROCESS process"
 
-CURDIR=$(dirname $0)/
+CURDIR=$(dirname "$0")/
 TESTDIR=$CURDIR/../../..
-NR_ITER=1000
+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"
-TEST_WAIT_SEC=5
 NUM_TESTS=9
+APP_PIDS=()
 
-source $TESTDIR/utils/utils.sh
+# shellcheck source-path=SCRIPTDIR/../../../
+source "${TESTDIR}/utils/utils.sh"
 
 if [ ! -x "$TESTAPP_BIN" ]; then
        BAIL_OUT "No UST $TESTAPP_BIN binary detected."
@@ -41,46 +32,61 @@ plan_tests $NUM_TESTS
 
 print_test_banner "$TEST_DESC"
 
+# shellcheck disable=SC2119
 start_lttng_sessiond
 
-# Start test for 1000 seconds
+# Start tests. Each is an infinite tracing loop.
 
-for i in `seq 1 $NUM_PROCESS`
+file_sync_after_first=$(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 $NR_ITER $NR_USEC_WAIT >/dev/null 2>&1 &
+       $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#$TESTAPP_BIN\n#g" | grep "$TESTAPP_BIN" | wc -l)
+       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 "Trace validation"
+pass "All applications are registered to sessiond"
 
-TRACE_PATH=$(mktemp -d)
+TRACE_PATH=$(mktemp -d -t tmp.test_nprocesses_trace_path.XXXXXX)
 
-create_lttng_session $SESSION_NAME $TRACE_PATH
+create_lttng_session_ok $SESSION_NAME "${TRACE_PATH}"
 
-enable_ust_lttng_event $SESSION_NAME $EVENT_NAME
-start_lttng_tracing $SESSION_NAME
+enable_ust_lttng_event_ok $SESSION_NAME $EVENT_NAME
+start_lttng_tracing_ok $SESSION_NAME
 
-diag "Sleeping $TEST_WAIT_SEC seconds for tracing to start everywhere"
-diag "Warning: this arbitrary time can make the test fail on slower system"
+touch "${file_sync_before_last}"
 
-sleep $TEST_WAIT_SEC
+# We don't validate whether the applications have traced here, rather
+# just that they registered to sessiond (above).
 
-stop_lttng_tracing $SESSION_NAME
-destroy_lttng_session $SESSION_NAME
+stop_lttng_tracing_ok $SESSION_NAME
+destroy_lttng_session_ok $SESSION_NAME
 
-rm -rf $TRACE_PATH
+#TODO: add trace validation.
 
-while [ -n "$(pidof $TESTAPP_NAME)" ]; do
-       killall -q $TESTAPP_NAME >/dev/null 2>&1
-       sleep 0.5
-done
+rm -rf "${TRACE_PATH}"
 
+diag "Stopping all spawned applications"
+kill "${APP_PIDS[@]}"
+wait "${APP_PIDS[@]}" 2>/dev/null
+APP_PIDS=()
+pass "Stopped all spawned applications"
 
-pass "Kill all spawned applications"
+rm -f "${file_sync_after_first}"
+rm -f "${file_sync_before_last}"
 
+# shellcheck disable=SC2119
 stop_lttng_sessiond