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 # This library is free software; you can redistribute it and/or modify it under
   7 # the terms of the GNU Lesser General Public License as published by the Free
   8 # Software Foundation; version 2.1 of the License.
   9 #
  10 # This library is distributed in the hope that it will be useful, but WITHOUT
  11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12 # FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  13 # details.
  14 #
  15 # You should have received a copy of the GNU Lesser General Public License
  16 # along with this library; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  18 TEST_DESC="UST - Blocking mode"
  19
  20 CURDIR=$(dirname $0)/
  21 TESTDIR=$CURDIR/../../..
  22 SESSION_NAME="blocking"
  23 CHANNEL_NAME="testchan"
  24
  25 TESTAPP_PATH="$TESTDIR/utils/testapp"
  26 TESTAPP_NAME="gen-ust-events"
  27 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  28 EVENT_NAME="tp:tptest"
  29
  30 NUM_TESTS=49
  31
  32 source $TESTDIR/utils/utils.sh
  33
  34 # MUST set TESTDIR before calling those functions
  35 # Run app on CPU 0 to ensure we only write in a single ring buffer.
  36 function run_app()
  37 {
  38         taskset 0x00000001 $TESTAPP_BIN -i $NUM_EVENT
  39         ok $? "Application done"
  40 }
  41
  42 function test_ust_implicit_no_blocking()
  43 {
  44         NUM_EVENT=5000000
  45         diag "UST implicit non-blocking mode (default): will hang if fails"
  46
  47         start_lttng_sessiond
  48         # session in no-output mode
  49         create_lttng_session_no_output $SESSION_NAME
  50         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
  51         start_lttng_tracing_ok $SESSION_NAME
  52         run_app
  53         stop_lttng_tracing_ok $SESSION_NAME
  54         destroy_lttng_session_ok $SESSION_NAME
  55         stop_lttng_sessiond
  56
  57         ok 0 "Does not hang"
  58 }
  59
  60 function test_ust_implicit_no_blocking_with_channel_blocking()
  61 {
  62         NUM_EVENT=5000000
  63         diag "UST implicit non-blocking mode (default) with blocking-timeout=inf channel: will hang if fails"
  64
  65         start_lttng_sessiond
  66         # session in no-output mode
  67         create_lttng_session_no_output $SESSION_NAME
  68         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf"
  69         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
  70         start_lttng_tracing_ok $SESSION_NAME
  71         run_app
  72         stop_lttng_tracing_ok $SESSION_NAME
  73         destroy_lttng_session_ok $SESSION_NAME
  74         stop_lttng_sessiond
  75
  76         ok 0 "Does not hang"
  77 }
  78
  79 function test_ust_timeout_no_blocking()
  80 {
  81         NUM_EVENT=12500
  82         diag "UST 1ms timeout blocking mode: will hang if fails"
  83
  84         start_lttng_sessiond
  85         # session in no-output mode
  86         create_lttng_session_no_output $SESSION_NAME
  87         # blocking timeout 1ms
  88         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000"
  89         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
  90         start_lttng_tracing_ok $SESSION_NAME
  91         LTTNG_UST_ALLOW_BLOCKING=1 run_app
  92         stop_lttng_tracing_ok $SESSION_NAME
  93         destroy_lttng_session_ok $SESSION_NAME
  94         stop_lttng_sessiond
  95
  96         ok 0 "Does not hang"
  97 }
  98
  99 function test_ust_snapshot_no_blocking()
 100 {
 101         NUM_EVENT=5000000
 102         diag "UST blocking mode: don't block in snapshot mode"
 103
 104         # Test without the plugin
 105         start_lttng_sessiond
 106         create_lttng_session_ok $SESSION_NAME $TRACE_PATH --snapshot
 107         # blocking timeout 1ms
 108         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=1000"
 109         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
 110         start_lttng_tracing_ok $SESSION_NAME
 111         LTTNG_UST_ALLOW_BLOCKING=1 run_app
 112         stop_lttng_tracing_ok $SESSION_NAME
 113         destroy_lttng_session_ok $SESSION_NAME
 114         stop_lttng_sessiond
 115
 116         ok 0 "Does not hang"
 117 }
 118
 119 function test_ust_blocking_no_discard()
 120 {
 121         NUM_EVENT=5000000
 122         diag "UST blocking mode: no event discarded"
 123
 124         # Test without the plugin
 125         start_lttng_sessiond
 126         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
 127         # infinite blocking timeout
 128         enable_ust_lttng_channel_ok $SESSION_NAME $CHANNEL_NAME "--blocking-timeout=inf"
 129         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME" $CHANNEL_NAME
 130         start_lttng_tracing_ok $SESSION_NAME
 131         LTTNG_UST_ALLOW_BLOCKING=1 run_app
 132         stop_lttng_tracing_ok $SESSION_NAME
 133         destroy_lttng_session_ok $SESSION_NAME
 134         stop_lttng_sessiond
 135
 136         nr_events=$(babeltrace $TRACE_PATH 2>/dev/null | wc -l)
 137
 138         test $nr_events -eq $NUM_EVENT
 139         ok $? "No event lost with UST blocking mode: found $nr_events expect $NUM_EVENT"
 140 }
 141
 142 plan_tests $NUM_TESTS
 143
 144 print_test_banner "$TEST_DESC"
 145
 146 TESTS=(
 147         "test_ust_implicit_no_blocking"
 148         "test_ust_implicit_no_blocking_with_channel_blocking"
 149         "test_ust_timeout_no_blocking"
 150         "test_ust_snapshot_no_blocking"
 151         "test_ust_blocking_no_discard"
 152 )
 153
 154 TEST_COUNT=${#TESTS[@]}
 155 i=0
 156
 157 while [ "$i" -lt "$TEST_COUNT" ]; do
 158
 159         TRACE_PATH=$(mktemp -d)
 160
 161         # Execute test
 162         ${TESTS[$i]}
 163
 164         rm -rf $TRACE_PATH
 165
 166         let "i++"
 167 done