tests/regression/tools/notification/test_notification_kernel_buffer_usage

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2017 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
   4 #
   5 # SPDX-License-Identifier: LGPL-2.1-only
   6
   7 CURDIR=$(dirname "$0")/
   8 TESTDIR=$CURDIR/../../../
   9
  10 TEST_TMPDIR=$(mktemp -d -t tmp.test_notif_kernel_buffer_usage_dir.XXXXXX)
  11
  12 # Set TMPDIR for further call to mktemp
  13 export TMPDIR="$TEST_TMPDIR"
  14
  15 #This is needed since the testpoint create a pipe with the consumerd type suffixed
  16 TESTPOINT_BASE_PATH=$(readlink -f "$TEST_TMPDIR/lttng.t_p_n")
  17 TESTPOINT_PIPE_PATH=$(mktemp -u -t "lttng.t_p_n.XXXXXX")
  18 TESTPOINT=$(readlink -f "${CURDIR}/.libs/libpause_consumer.so")
  19 TESTAPP_STATE_PATH=$(mktemp -u -t "application_state.XXXXXXXXXX")
  20
  21
  22 SESSION_NAME="my_session"
  23 CHANNEL_NAME="my_channel"
  24
  25 NUM_TESTS=99
  26
  27 # shellcheck source=../../../utils/utils.sh
  28 source "$TESTDIR/utils/utils.sh"
  29 # shellcheck source=./util_event_generator.sh
  30 source "$CURDIR/util_event_generator.sh"
  31
  32 function test_buffer_usage_notification
  33 {
  34         local event_name="lttng_test_filter_event"
  35         local trace_path
  36         local page_size
  37         local consumerd_pipe=()
  38
  39         trace_path=$(mktemp -d -t "tmp.${FUNCNAME[0]}_trace_path.XXXXXXX")
  40         page_size=$(getconf PAGE_SIZE)
  41
  42         create_lttng_session_notap $SESSION_NAME "$trace_path"
  43
  44         lttng_enable_kernel_channel_notap $SESSION_NAME $CHANNEL_NAME \
  45                 --subbuf-size="$page_size"
  46         enable_kernel_lttng_event_notap $SESSION_NAME $event_name $CHANNEL_NAME
  47
  48         kernel_event_generator generate_filter_events "$TESTAPP_STATE_PATH" &
  49         APP_PID=$!
  50
  51         # This is needed since the testpoint create a pipe with the consumer
  52         # type suffixed.
  53         for f in "$TESTPOINT_BASE_PATH"*; do
  54                 consumerd_pipe+=("$f")
  55         done
  56
  57         "$CURDIR/notification" 2 LTTNG_DOMAIN_KERNEL $APP_PID "$TESTAPP_STATE_PATH" \
  58                 $SESSION_NAME $CHANNEL_NAME "${consumerd_pipe[@]}"
  59
  60         destroy_lttng_session_notap $SESSION_NAME
  61
  62         kill -SIGUSR2 $APP_PID
  63         wait $APP_PID 2> /dev/null
  64 }
  65
  66 if [ "$(id -u)" == "0" ]; then
  67
  68         validate_lttng_modules_present
  69
  70
  71         modprobe lttng-test
  72
  73         # Used on sessiond launch.
  74         LTTNG_SESSIOND_ENV_VARS="LTTNG_TESTPOINT_ENABLE=1 \
  75                 CONSUMER_PAUSE_PIPE_PATH=${TESTPOINT_PIPE_PATH} \
  76                 LD_PRELOAD=${TESTPOINT}"
  77         start_lttng_sessiond_notap
  78
  79         test_buffer_usage_notification
  80
  81         stop_lttng_sessiond_notap
  82         rmmod lttng-test
  83
  84         rm -rf "${consumerd_pipe[@]}" 2> /dev/null
  85 else
  86         # Kernel tests are skipped.
  87         plan_tests $NUM_TESTS
  88         skip 0 "Root access is needed. Skipping all kernel notification tests." $NUM_TESTS
  89 fi
  90
  91 rm -rf "$TEST_TMPDIR"