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
  24 TESTAPP_PATH="$TESTDIR/utils/testapp"
  25 TESTAPP_NAME="gen-ust-events"
  26 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  27 EVENT_NAME="tp:tptest"
  28
  29 NUM_TESTS=45
  30
  31 source $TESTDIR/utils/utils.sh
  32
  33 # MUST set TESTDIR before calling those functions
  34 # Run app on CPU 0 to ensure we only write in a single ring buffer.
  35 function run_app()
  36 {
  37         taskset 0x00000001 $TESTAPP_BIN $NUM_EVENT
  38         ok $? "Application done"
  39 }
  40
  41 function test_ust_implicit_no_blocking()
  42 {
  43         NUM_EVENT=500000
  44         diag "UST implicit non-blocking mode (default): will hang if fails"
  45
  46         # Test without the plugin
  47         start_lttng_sessiond
  48         create_lttng_session_no_output $SESSION_NAME
  49         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
  50         start_lttng_tracing_ok $SESSION_NAME
  51         run_app
  52         stop_lttng_tracing_ok $SESSION_NAME
  53         destroy_lttng_session_ok $SESSION_NAME
  54         stop_lttng_sessiond
  55
  56         ok 0 "Does not hang"
  57 }
  58
  59 function test_ust_explicit_no_blocking()
  60 {
  61         NUM_EVENT=500000
  62         diag "UST explicit non-blocking mode: will hang if fails"
  63
  64         # Test without the plugin
  65         start_lttng_sessiond
  66         create_lttng_session_no_output $SESSION_NAME
  67         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
  68         start_lttng_tracing_ok $SESSION_NAME
  69         LTTNG_UST_BLOCKING_RETRY_TIMEOUT=0 run_app
  70         stop_lttng_tracing_ok $SESSION_NAME
  71         destroy_lttng_session_ok $SESSION_NAME
  72         stop_lttng_sessiond
  73
  74         ok 0 "Does not hang"
  75 }
  76
  77 function test_ust_timeout_no_blocking()
  78 {
  79         NUM_EVENT=12500
  80         diag "UST 1ms timeout retry mode: will hang if fails"
  81
  82         start_lttng_sessiond
  83         create_lttng_session_no_output $SESSION_NAME
  84         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
  85         start_lttng_tracing_ok $SESSION_NAME
  86         # retry timeout 1ms
  87         LTTNG_UST_BLOCKING_RETRY_TIMEOUT=1 run_app
  88         stop_lttng_tracing_ok $SESSION_NAME
  89         destroy_lttng_session_ok $SESSION_NAME
  90         stop_lttng_sessiond
  91
  92         ok 0 "Does not hang"
  93 }
  94
  95 function test_ust_snapshot_no_blocking()
  96 {
  97         NUM_EVENT=500000
  98         diag "UST blocking mode: don't block in snapshot mode"
  99
 100         # Test without the plugin
 101         start_lttng_sessiond
 102         create_lttng_session_ok $SESSION_NAME $TRACE_PATH --snapshot
 103         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
 104         start_lttng_tracing_ok $SESSION_NAME
 105         LTTNG_UST_BLOCKING_RETRY_TIMEOUT=-1 run_app
 106         stop_lttng_tracing_ok $SESSION_NAME
 107         destroy_lttng_session_ok $SESSION_NAME
 108         stop_lttng_sessiond
 109
 110         ok 0 "Does not hang"
 111 }
 112
 113 function test_ust_blocking_no_discard()
 114 {
 115         NUM_EVENT=500000
 116         diag "UST blocking mode: no event discarded"
 117
 118         # Test without the plugin
 119         start_lttng_sessiond
 120         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
 121         enable_ust_lttng_event_ok $SESSION_NAME "$EVENT_NAME"
 122         start_lttng_tracing_ok $SESSION_NAME
 123         # infinite retry timeout
 124         LTTNG_UST_BLOCKING_RETRY_TIMEOUT=-1 run_app
 125         stop_lttng_tracing_ok $SESSION_NAME
 126         destroy_lttng_session_ok $SESSION_NAME
 127         stop_lttng_sessiond
 128
 129         nr_events=$(babeltrace $TRACE_PATH 2>/dev/null | wc -l)
 130
 131         test $nr_events -eq $NUM_EVENT
 132         ok $? "No event lost with UST blocking mode: found $nr_events expect $NUM_EVENT"
 133 }
 134
 135 plan_tests $NUM_TESTS
 136
 137 print_test_banner "$TEST_DESC"
 138
 139 TESTS=(
 140         "test_ust_implicit_no_blocking"
 141         "test_ust_explicit_no_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)
 153
 154         # Execute test
 155         ${TESTS[$i]}
 156
 157         rm -rf $TRACE_PATH
 158
 159         let "i++"
 160 done