tests/regression/ust/blocking/test_blocking

   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 test_ust_implicit_no_blocking()
  34 {
  35         NUM_EVENT=5000000
  36         diag "UST implicit non-blocking mode (default): will hang if fails"
  37
  38         start_lttng_sessiond
  39         # session in no-output mode
  40         create_lttng_session_no_output $SESSION_NAME
  41         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
  42         start_lttng_tracing_ok $SESSION_NAME
  43         run_app
  44         stop_lttng_tracing_ok $SESSION_NAME
  45         destroy_lttng_session_ok $SESSION_NAME
  46         stop_lttng_sessiond
  47
  48         ok 0 "Does not hang"
  49 }
  50
  51 function test_ust_implicit_no_blocking_with_channel_blocking()
  52 {
  53         NUM_EVENT=5000000
  54         diag "UST implicit non-blocking mode (default) with blocking-timeout=inf channel: will hang if fails"
  55
  56         start_lttng_sessiond
  57         # session in no-output mode
  58         create_lttng_session_no_output $SESSION_NAME
  59         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf"
  60         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
  61         start_lttng_tracing_ok $SESSION_NAME
  62         run_app
  63         stop_lttng_tracing_ok $SESSION_NAME
  64         destroy_lttng_session_ok $SESSION_NAME
  65         stop_lttng_sessiond
  66
  67         ok 0 "Does not hang"
  68 }
  69
  70 function test_ust_timeout_no_blocking()
  71 {
  72         NUM_EVENT=12500
  73         diag "UST 1ms timeout blocking mode: will hang if fails"
  74
  75         start_lttng_sessiond
  76         # session in no-output mode
  77         create_lttng_session_no_output $SESSION_NAME
  78         # blocking timeout 1ms
  79         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000"
  80         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
  81         start_lttng_tracing_ok $SESSION_NAME
  82         LTTNG_UST_ALLOW_BLOCKING=1 run_app
  83         stop_lttng_tracing_ok $SESSION_NAME
  84         destroy_lttng_session_ok $SESSION_NAME
  85         stop_lttng_sessiond
  86
  87         ok 0 "Does not hang"
  88 }
  89
  90 function test_ust_snapshot_no_blocking()
  91 {
  92         NUM_EVENT=5000000
  93         diag "UST blocking mode: don't block in snapshot mode"
  94
  95         # Test without the plugin
  96         start_lttng_sessiond
  97         create_lttng_session_ok $SESSION_NAME $TRACE_PATH --snapshot
  98         # blocking timeout 1ms
  99         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000"
 100         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
 101         start_lttng_tracing_ok $SESSION_NAME
 102         LTTNG_UST_ALLOW_BLOCKING=1 run_app
 103         stop_lttng_tracing_ok $SESSION_NAME
 104         destroy_lttng_session_ok $SESSION_NAME
 105         stop_lttng_sessiond
 106
 107         ok 0 "Does not hang"
 108 }
 109
 110 function test_ust_blocking_no_discard()
 111 {
 112         NUM_EVENT=5000000
 113         diag "UST blocking mode: no event discarded"
 114
 115         # Test without the plugin
 116         start_lttng_sessiond
 117         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
 118         # infinite blocking timeout
 119         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf"
 120         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
 121         start_lttng_tracing_ok $SESSION_NAME
 122         LTTNG_UST_ALLOW_BLOCKING=1 run_app
 123         stop_lttng_tracing_ok $SESSION_NAME
 124         destroy_lttng_session_ok $SESSION_NAME
 125         stop_lttng_sessiond
 126
 127         nr_events=$("$BABELTRACE_BIN" $TRACE_PATH 2>/dev/null | wc -l)
 128
 129         test $nr_events -eq $NUM_EVENT
 130         ok $? "No event lost with UST blocking mode: found $nr_events expect $NUM_EVENT"
 131 }
 132
 133 plan_tests $NUM_TESTS
 134
 135 print_test_banner "$TEST_DESC"
 136
 137 bail_out_if_no_babeltrace
 138
 139 TESTS=(
 140         "test_ust_implicit_no_blocking"
 141         "test_ust_implicit_no_blocking_with_channel_blocking"
 142         "test_ust_timeout_no_blocking"
 143         "test_ust_snapshot_no_blocking"
 144         "test_ust_blocking_no_discard"
 145 )
 146
 147 TEST_COUNT=${#TESTS[@]}
 148 i=0
 149
 150 while [ "$i" -lt "$TEST_COUNT" ]; do
 151
 152         TRACE_PATH=$(mktemp -d -t tmp.test_blocking_ust_trace_path.XXXXXX)
 153
 154         # Execute test
 155         ${TESTS[$i]}
 156
 157         rm -rf $TRACE_PATH
 158
 159         let "i++"
 160 done