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 TMPDIR=$(mktemp -d)
  11
  12 #This is needed since the testpoint create a pipe with the consumerd type suffixed
  13 TESTPOINT_BASE_PATH=$(readlink -f "$TMPDIR/lttng.t_p_n")
  14 TESTPOINT_PIPE_PATH=$(mktemp -u "${TESTPOINT_BASE_PATH}.XXXXXX")
  15 TESTPOINT=$(readlink -f "${CURDIR}/.libs/libpause_consumer.so")
  16 TESTAPP_STATE_PATH=$(mktemp -u "$TMPDIR/application_state.XXXXXXXXXX")
  17
  18
  19 SESSION_NAME="my_session"
  20 CHANNEL_NAME="my_channel"
  21
  22 NUM_TESTS=104
  23
  24 # shellcheck source=../../../utils/utils.sh
  25 source "$TESTDIR/utils/utils.sh"
  26 # shellcheck source=./util_event_generator.sh
  27 source "$CURDIR/util_event_generator.sh"
  28
  29 function test_buffer_usage_notification
  30 {
  31         local event_name="lttng_test_filter_event"
  32         local trace_path
  33         local page_size
  34         local consumerd_pipe=()
  35
  36         trace_path=$(mktemp -d)
  37         page_size=$(getconf PAGE_SIZE)
  38
  39         create_lttng_session_notap $SESSION_NAME "$trace_path"
  40
  41         lttng_enable_kernel_channel_notap $SESSION_NAME $CHANNEL_NAME \
  42                 --subbuf-size="$page_size"
  43         enable_kernel_lttng_event_notap $SESSION_NAME $event_name $CHANNEL_NAME
  44
  45         kernel_event_generator generate_filter_events "$TESTAPP_STATE_PATH" &
  46         APP_PID=$!
  47
  48         # This is needed since the testpoint create a pipe with the consumer
  49         # type suffixed.
  50         for f in "$TESTPOINT_BASE_PATH"*; do
  51                 consumerd_pipe+=("$f")
  52         done
  53
  54         "$CURDIR/notification" 2 LTTNG_DOMAIN_KERNEL $APP_PID "$TESTAPP_STATE_PATH" \
  55                 $SESSION_NAME $CHANNEL_NAME "${consumerd_pipe[@]}"
  56
  57         destroy_lttng_session_notap $SESSION_NAME
  58
  59         kill -SIGUSR2 $APP_PID
  60         wait $APP_PID 2> /dev/null
  61 }
  62
  63 if [ "$(id -u)" == "0" ]; then
  64
  65         validate_lttng_modules_present
  66
  67
  68         modprobe lttng-test
  69
  70         # Used on sessiond launch.
  71         LTTNG_SESSIOND_ENV_VARS="LTTNG_TESTPOINT_ENABLE=1 \
  72                 CONSUMER_PAUSE_PIPE_PATH=${TESTPOINT_PIPE_PATH} \
  73                 LD_PRELOAD=${TESTPOINT}"
  74         start_lttng_sessiond_notap
  75
  76         test_buffer_usage_notification
  77
  78         stop_lttng_sessiond_notap
  79         rmmod lttng-test
  80
  81         rm -rf "${consumerd_pipe[@]}" 2> /dev/null
  82 else
  83         # Kernel tests are skipped.
  84         plan_tests $NUM_TESTS
  85         skip 0 "Root access is needed. Skipping all kernel notification tests." $NUM_TESTS
  86 fi
  87
  88 rm -rf "$TMPDIR"