tests/regression/tools/notification/test_notification_kernel

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2017 Jonathan Rajotte-Julien <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 ${CURDIR}/.libs/libpause_consumer.so)
  16
  17
  18 TESTAPP_PATH="$TESTDIR/utils/testapp"
  19 TESTAPP_NAME="gen-ust-events"
  20 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  21 TESTAPP_STATE_PATH=$(mktemp -u "$TMPDIR/application_state.XXXXXXXXXX")
  22
  23 NR_ITER=-1
  24 NR_USEC_WAIT=5
  25
  26 SESSION_NAME="my_session"
  27 CHANNEL_NAME="my_channel"
  28
  29 TRACE_PATH=$(mktemp -d)
  30 PAGE_SIZE=$(getconf PAGE_SIZE)
  31
  32 DIR=$(readlink -f $TESTDIR)
  33 NUM_TESTS=104
  34
  35 source $TESTDIR/utils/utils.sh
  36
  37 function kernel_event_generator_toggle_state
  38 {
  39         kernel_event_generator_suspended=$((kernel_event_generator_suspended==0))
  40
  41 }
  42 function kernel_event_generator
  43 {
  44         state_file=$1
  45         kernel_event_generator_suspended=0
  46         trap kernel_event_generator_toggle_state SIGUSR1
  47
  48         while (true); do
  49                 if [[ $kernel_event_generator_suspended -eq "1" ]]; then
  50                         touch $state_file
  51                         sleep 0.5
  52                 else
  53                         if [[ -f $state_file ]]; then
  54                                 rm $state_file 2> /dev/null
  55                         fi
  56                         echo -n "1000" > /proc/lttng-test-filter-event 2> /dev/null
  57                 fi
  58         done
  59 }
  60
  61 function kernel_test
  62 {
  63         local consumerd_pipe=()
  64         local event_name="lttng_test_filter_event"
  65
  66         modprobe lttng-test
  67
  68         LTTNG_SESSIOND_ENV_VARS="LTTNG_TESTPOINT_ENABLE=1 CONSUMER_PAUSE_PIPE_PATH=${TESTPOINT_PIPE_PATH} LD_PRELOAD=${TESTPOINT}"
  69         start_lttng_sessiond_notap
  70
  71         create_lttng_session_notap $SESSION_NAME $TRACE_PATH
  72
  73         lttng_enable_kernel_channel_notap $SESSION_NAME $CHANNEL_NAME --subbuf-size=$PAGE_SIZE
  74         enable_kernel_lttng_event_notap $SESSION_NAME $event_name $CHANNEL_NAME
  75
  76         #This is needed since the testpoint create a pipe with the consumer type suffixed
  77         for f in "$TESTPOINT_BASE_PATH"*; do
  78                 consumerd_pipe+=("$f")
  79         done
  80
  81         kernel_event_generator $TESTAPP_STATE_PATH &
  82         APP_PID=$!
  83
  84         $CURDIR/notification LTTNG_DOMAIN_KERNEL $SESSION_NAME $CHANNEL_NAME $APP_PID $TESTAPP_STATE_PATH ${consumerd_pipe[@]}
  85
  86         destroy_lttng_session_notap $SESSION_NAME
  87         stop_lttng_sessiond_notap
  88
  89         kill -9 $APP_PID
  90         wait $APP_PID 2> /dev/null
  91
  92
  93         rmmod lttng-test
  94
  95         rm -rf ${consumerd_pipe[@]} 2> /dev/null
  96 }
  97
  98 if [ "$(id -u)" == "0" ]; then
  99         validate_lttng_modules_present
 100         kernel_test
 101 else
 102         # Kernel tests are skipped.
 103         plan_tests $NUM_TESTS
 104         skip 0 "Root access is needed. Skipping all kernel notification tests." $NUM_TESTS
 105 fi
 106
 107 # Just in case cleanup
 108 rm -rf $TRACE_PATH
 109 rm -rf $TMPDIR