| 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 | |
| 27 | function kernel_event_generator_toggle_state |
| 28 | { |
| 29 | kernel_event_generator_suspended=$((kernel_event_generator_suspended==0)) |
| 30 | } |
| 31 | |
| 32 | function generate_filter_events |
| 33 | { |
| 34 | /bin/echo -n "10" > /proc/lttng-test-filter-event 2> /dev/null |
| 35 | } |
| 36 | |
| 37 | function kernel_event_generator |
| 38 | { |
| 39 | command_to_run=$1 |
| 40 | state_file=$2 |
| 41 | kernel_event_generator_suspended=0 |
| 42 | trap kernel_event_generator_toggle_state SIGUSR1 |
| 43 | |
| 44 | while (true); do |
| 45 | if [[ $kernel_event_generator_suspended -eq "1" ]]; then |
| 46 | touch $state_file |
| 47 | sleep 0.5 |
| 48 | else |
| 49 | if [[ -f $state_file ]]; then |
| 50 | rm $state_file 2> /dev/null |
| 51 | fi |
| 52 | $command_to_run |
| 53 | fi |
| 54 | done |
| 55 | } |
| 56 | |
| 57 | function test_buffer_usage_notification |
| 58 | { |
| 59 | local event_name="lttng_test_filter_event" |
| 60 | local trace_path |
| 61 | local page_size |
| 62 | local consumerd_pipe=() |
| 63 | |
| 64 | trace_path=$(mktemp -d) |
| 65 | page_size=$(getconf PAGE_SIZE) |
| 66 | |
| 67 | create_lttng_session_notap $SESSION_NAME "$trace_path" |
| 68 | |
| 69 | lttng_enable_kernel_channel_notap $SESSION_NAME $CHANNEL_NAME \ |
| 70 | --subbuf-size="$page_size" |
| 71 | enable_kernel_lttng_event_notap $SESSION_NAME $event_name $CHANNEL_NAME |
| 72 | |
| 73 | kernel_event_generator generate_filter_events "$TESTAPP_STATE_PATH" & |
| 74 | APP_PID=$! |
| 75 | |
| 76 | # This is needed since the testpoint create a pipe with the consumer |
| 77 | # type suffixed. |
| 78 | for f in "$TESTPOINT_BASE_PATH"*; do |
| 79 | consumerd_pipe+=("$f") |
| 80 | done |
| 81 | |
| 82 | "$CURDIR/notification" 2 LTTNG_DOMAIN_KERNEL $SESSION_NAME $CHANNEL_NAME \ |
| 83 | $APP_PID $TESTAPP_STATE_PATH ${consumerd_pipe[@]} |
| 84 | |
| 85 | destroy_lttng_session_notap $SESSION_NAME |
| 86 | |
| 87 | kill -9 $APP_PID |
| 88 | wait $APP_PID 2> /dev/null |
| 89 | } |
| 90 | |
| 91 | if [ "$(id -u)" == "0" ]; then |
| 92 | |
| 93 | validate_lttng_modules_present |
| 94 | |
| 95 | |
| 96 | modprobe lttng-test |
| 97 | |
| 98 | # Used on sessiond launch. |
| 99 | LTTNG_SESSIOND_ENV_VARS="LTTNG_TESTPOINT_ENABLE=1 \ |
| 100 | CONSUMER_PAUSE_PIPE_PATH=${TESTPOINT_PIPE_PATH} \ |
| 101 | LD_PRELOAD=${TESTPOINT}" |
| 102 | start_lttng_sessiond_notap |
| 103 | |
| 104 | test_buffer_usage_notification |
| 105 | |
| 106 | stop_lttng_sessiond_notap |
| 107 | rmmod lttng-test |
| 108 | |
| 109 | rm -rf "${consumerd_pipe[@]}" 2> /dev/null |
| 110 | else |
| 111 | # Kernel tests are skipped. |
| 112 | plan_tests $NUM_TESTS |
| 113 | skip 0 "Root access is needed. Skipping all kernel notification tests." $NUM_TESTS |
| 114 | fi |
| 115 | |
| 116 | rm -rf "$TMPDIR" |