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 source $TESTDIR/utils/utils.sh
  23
  24 # MUST set TESTDIR before calling those functions
  25 # Run app on CPU 0 to ensure we only write in a single ring buffer.
  26 function run_app()
  27 {
  28         taskset 0x00000001 $TESTAPP_BIN -i $NUM_EVENT
  29         ok $? "Application done"
  30 }
  31
  32 function test_ust_implicit_no_blocking()
  33 {
  34         NUM_EVENT=5000000
  35         diag "UST implicit non-blocking mode (default): will hang if fails"
  36
  37         start_lttng_sessiond
  38         # session in no-output mode
  39         create_lttng_session_no_output $SESSION_NAME
  40         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
  41         start_lttng_tracing_ok $SESSION_NAME
  42         run_app
  43         stop_lttng_tracing_ok $SESSION_NAME
  44         destroy_lttng_session_ok $SESSION_NAME
  45         stop_lttng_sessiond
  46
  47         ok 0 "Does not hang"
  48 }
  49
  50 function test_ust_implicit_no_blocking_with_channel_blocking()
  51 {
  52         NUM_EVENT=5000000
  53         diag "UST implicit non-blocking mode (default) with blocking-timeout=inf channel: will hang if fails"
  54
  55         start_lttng_sessiond
  56         # session in no-output mode
  57         create_lttng_session_no_output $SESSION_NAME
  58         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf"
  59         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
  60         start_lttng_tracing_ok $SESSION_NAME
  61         run_app
  62         stop_lttng_tracing_ok $SESSION_NAME
  63         destroy_lttng_session_ok $SESSION_NAME
  64         stop_lttng_sessiond
  65
  66         ok 0 "Does not hang"
  67 }
  68
  69 function test_ust_timeout_no_blocking()
  70 {
  71         NUM_EVENT=12500
  72         diag "UST 1ms timeout blocking mode: will hang if fails"
  73
  74         start_lttng_sessiond
  75         # session in no-output mode
  76         create_lttng_session_no_output $SESSION_NAME
  77         # blocking timeout 1ms
  78         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000"
  79         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
  80         start_lttng_tracing_ok $SESSION_NAME
  81         LTTNG_UST_ALLOW_BLOCKING=1 run_app
  82         stop_lttng_tracing_ok $SESSION_NAME
  83         destroy_lttng_session_ok $SESSION_NAME
  84         stop_lttng_sessiond
  85
  86         ok 0 "Does not hang"
  87 }
  88
  89 function test_ust_snapshot_no_blocking()
  90 {
  91         NUM_EVENT=5000000
  92         diag "UST blocking mode: don't block in snapshot mode"
  93
  94         # Test without the plugin
  95         start_lttng_sessiond
  96         create_lttng_session_ok $SESSION_NAME $TRACE_PATH --snapshot
  97         # blocking timeout 1ms
  98         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000"
  99         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
 100         start_lttng_tracing_ok $SESSION_NAME
 101         LTTNG_UST_ALLOW_BLOCKING=1 run_app
 102         stop_lttng_tracing_ok $SESSION_NAME
 103         destroy_lttng_session_ok $SESSION_NAME
 104         stop_lttng_sessiond
 105
 106         ok 0 "Does not hang"
 107 }
 108
 109 function test_ust_blocking_no_discard()
 110 {
 111         NUM_EVENT=5000000
 112         diag "UST blocking mode: no event discarded"
 113
 114         # Test without the plugin
 115         start_lttng_sessiond
 116         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
 117         # infinite blocking timeout
 118         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf"
 119         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
 120         start_lttng_tracing_ok $SESSION_NAME
 121         LTTNG_UST_ALLOW_BLOCKING=1 run_app
 122         stop_lttng_tracing_ok $SESSION_NAME
 123         destroy_lttng_session_ok $SESSION_NAME
 124         stop_lttng_sessiond
 125
 126         nr_events=$(babeltrace $TRACE_PATH 2>/dev/null | wc -l)
 127
 128         test $nr_events -eq $NUM_EVENT
 129         ok $? "No event lost with UST blocking mode: found $nr_events expect $NUM_EVENT"
 130 }
 131
 132 plan_tests $NUM_TESTS
 133
 134 print_test_banner "$TEST_DESC"
 135
 136 TESTS=(
 137         "test_ust_implicit_no_blocking"
 138         "test_ust_implicit_no_blocking_with_channel_blocking"
 139         "test_ust_timeout_no_blocking"
 140         "test_ust_snapshot_no_blocking"
 141         "test_ust_blocking_no_discard"
 142 )
 143
 144 TEST_COUNT=${#TESTS[@]}
 145 i=0
 146
 147 while [ "$i" -lt "$TEST_COUNT" ]; do
 148
 149         TRACE_PATH=$(mktemp -d)
 150
 151         # Execute test
 152         ${TESTS[$i]}
 153
 154         rm -rf $TRACE_PATH
 155
 156         let "i++"
 157 done