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