| 1 | #!/bin/bash |
| 2 | # |
| 3 | # Copyright (C) 2015 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> |
| 4 | # Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | # |
| 6 | # SPDX-License-Identifier: LGPL-2.1-only |
| 7 | |
| 8 | TEST_DESC="UST - Blocking mode" |
| 9 | |
| 10 | CURDIR=$(dirname $0)/ |
| 11 | TESTDIR=$CURDIR/../../.. |
| 12 | SESSION_NAME="blocking" |
| 13 | CHANNEL_NAME="testchan" |
| 14 | |
| 15 | TESTAPP_PATH="$TESTDIR/utils/testapp" |
| 16 | TESTAPP_NAME="gen-ust-events" |
| 17 | TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME" |
| 18 | EVENT_NAME="tp:tptest" |
| 19 | |
| 20 | NUM_TESTS=49 |
| 21 | |
| 22 | # shellcheck source=../utils/utils.sh |
| 23 | source "$TESTDIR/utils/utils.sh" |
| 24 | |
| 25 | # MUST set TESTDIR before calling those functions |
| 26 | # Run app on a single CPU to ensure we only write in a single ring buffer. |
| 27 | function run_app() |
| 28 | { |
| 29 | taskset --cpu-list "$(get_any_available_cpu)" $TESTAPP_BIN -i $NUM_EVENT |
| 30 | ok $? "Application done" |
| 31 | } |
| 32 | |
| 33 | function check_disk_space() |
| 34 | { |
| 35 | local path |
| 36 | |
| 37 | path="${1:?}" |
| 38 | kb_free=$(df -k -P "${path}" | tail -n 1 | awk '{ print $4 }') |
| 39 | if [ "${kb_free}" -lt "1048576" ] ; then |
| 40 | return 1 |
| 41 | fi |
| 42 | |
| 43 | return 0 |
| 44 | } |
| 45 | |
| 46 | function test_ust_implicit_no_blocking() |
| 47 | { |
| 48 | NUM_EVENT=5000000 |
| 49 | diag "UST implicit non-blocking mode (default): will hang if fails" |
| 50 | |
| 51 | start_lttng_sessiond |
| 52 | # session in no-output mode |
| 53 | create_lttng_session_no_output $SESSION_NAME |
| 54 | enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" |
| 55 | start_lttng_tracing_ok $SESSION_NAME |
| 56 | run_app |
| 57 | stop_lttng_tracing_ok $SESSION_NAME |
| 58 | destroy_lttng_session_ok $SESSION_NAME |
| 59 | stop_lttng_sessiond |
| 60 | |
| 61 | ok 0 "Does not hang" |
| 62 | } |
| 63 | |
| 64 | function test_ust_implicit_no_blocking_with_channel_blocking() |
| 65 | { |
| 66 | NUM_EVENT=5000000 |
| 67 | diag "UST implicit non-blocking mode (default) with blocking-timeout=inf channel: will hang if fails" |
| 68 | |
| 69 | start_lttng_sessiond |
| 70 | # session in no-output mode |
| 71 | create_lttng_session_no_output $SESSION_NAME |
| 72 | enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf" |
| 73 | enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME |
| 74 | start_lttng_tracing_ok $SESSION_NAME |
| 75 | run_app |
| 76 | stop_lttng_tracing_ok $SESSION_NAME |
| 77 | destroy_lttng_session_ok $SESSION_NAME |
| 78 | stop_lttng_sessiond |
| 79 | |
| 80 | ok 0 "Does not hang" |
| 81 | } |
| 82 | |
| 83 | function test_ust_timeout_no_blocking() |
| 84 | { |
| 85 | NUM_EVENT=12500 |
| 86 | diag "UST 1ms timeout blocking mode: will hang if fails" |
| 87 | |
| 88 | start_lttng_sessiond |
| 89 | # session in no-output mode |
| 90 | create_lttng_session_no_output $SESSION_NAME |
| 91 | # blocking timeout 1ms |
| 92 | enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000" |
| 93 | enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME |
| 94 | start_lttng_tracing_ok $SESSION_NAME |
| 95 | LTTNG_UST_ALLOW_BLOCKING=1 run_app |
| 96 | stop_lttng_tracing_ok $SESSION_NAME |
| 97 | destroy_lttng_session_ok $SESSION_NAME |
| 98 | stop_lttng_sessiond |
| 99 | |
| 100 | ok 0 "Does not hang" |
| 101 | } |
| 102 | |
| 103 | function test_ust_snapshot_no_blocking() |
| 104 | { |
| 105 | NUM_EVENT=5000000 |
| 106 | diag "UST blocking mode: don't block in snapshot mode" |
| 107 | |
| 108 | # Test without the plugin |
| 109 | start_lttng_sessiond |
| 110 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH --snapshot |
| 111 | # blocking timeout 1ms |
| 112 | enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000" |
| 113 | enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME |
| 114 | start_lttng_tracing_ok $SESSION_NAME |
| 115 | LTTNG_UST_ALLOW_BLOCKING=1 run_app |
| 116 | stop_lttng_tracing_ok $SESSION_NAME |
| 117 | destroy_lttng_session_ok $SESSION_NAME |
| 118 | stop_lttng_sessiond |
| 119 | |
| 120 | ok 0 "Does not hang" |
| 121 | } |
| 122 | |
| 123 | function test_ust_blocking_no_discard() |
| 124 | { |
| 125 | NUM_EVENT=5000000 |
| 126 | diag "UST blocking mode: no event discarded" |
| 127 | |
| 128 | # Test without the plugin |
| 129 | start_lttng_sessiond |
| 130 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH |
| 131 | # infinite blocking timeout |
| 132 | enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf" |
| 133 | enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME |
| 134 | start_lttng_tracing_ok $SESSION_NAME |
| 135 | LTTNG_UST_ALLOW_BLOCKING=1 run_app |
| 136 | stop_lttng_tracing_ok $SESSION_NAME |
| 137 | destroy_lttng_session_ok $SESSION_NAME |
| 138 | stop_lttng_sessiond |
| 139 | |
| 140 | nr_events=$("$BABELTRACE_BIN" $TRACE_PATH 2>/dev/null | wc -l) |
| 141 | |
| 142 | test $nr_events -eq $NUM_EVENT |
| 143 | ok $? "No event lost with UST blocking mode: found $nr_events expect $NUM_EVENT" |
| 144 | } |
| 145 | |
| 146 | plan_tests $NUM_TESTS |
| 147 | |
| 148 | print_test_banner "$TEST_DESC" |
| 149 | |
| 150 | bail_out_if_no_babeltrace |
| 151 | |
| 152 | if ! check_disk_space "${TMPDIR:-/tmp}"; then |
| 153 | BAIL_OUT "Not enough free space to run blocking tests" |
| 154 | fi |
| 155 | |
| 156 | TESTS=( |
| 157 | "test_ust_implicit_no_blocking" |
| 158 | "test_ust_implicit_no_blocking_with_channel_blocking" |
| 159 | "test_ust_timeout_no_blocking" |
| 160 | "test_ust_snapshot_no_blocking" |
| 161 | "test_ust_blocking_no_discard" |
| 162 | ) |
| 163 | |
| 164 | TEST_COUNT=${#TESTS[@]} |
| 165 | i=0 |
| 166 | |
| 167 | while [ "$i" -lt "$TEST_COUNT" ]; do |
| 168 | |
| 169 | TRACE_PATH=$(mktemp -d -t tmp.test_blocking_ust_trace_path.XXXXXX) |
| 170 | |
| 171 | # Execute test |
| 172 | ${TESTS[$i]} |
| 173 | |
| 174 | rm -rf $TRACE_PATH |
| 175 | |
| 176 | let "i++" |
| 177 | done |