tests/regression/kernel/test_event_basic

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2013 Christian Babeux <christian.babeux@efficios.com>
   4 #
   5 # This program is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License, version 2 only, as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 # more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along with
  15 # this program; if not, write to the Free Software Foundation, Inc., 51
  16 # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 TEST_DESC="Kernel tracer - Basic event"
  19
  20 CURDIR=$(dirname $0)/
  21 TESTDIR=$CURDIR/../..
  22 NUM_TESTS=20
  23
  24 TESTCMD="/bin/true"
  25
  26 source $TESTDIR/utils/utils.sh
  27
  28 function test_event_basic()
  29 {
  30         TRACE_PATH=$(mktemp -d)
  31         SESSION_NAME="kernel_event_basic"
  32
  33         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  34
  35         lttng_enable_kernel_event $SESSION_NAME "sched_switch"
  36         lttng_enable_kernel_event $SESSION_NAME "sched_process_exit"
  37         lttng_enable_kernel_event $SESSION_NAME "sched_process_fork"
  38
  39         start_lttng_tracing_ok
  40
  41         # Running a process and waiting for its completion forces the triggering of
  42         # fork, sched_switch and exit events
  43         eval ${TESTCMD}
  44         stop_lttng_tracing_ok
  45
  46         validate_trace "sched_switch" $TRACE_PATH
  47         validate_trace "sched_process_exit" $TRACE_PATH
  48         validate_trace "sched_process_fork" $TRACE_PATH
  49
  50         destroy_lttng_session_ok $SESSION_NAME
  51
  52         rm -rf $TRACE_PATH
  53 }
  54
  55 function test_enable_after_start()
  56 {
  57         TRACE_PATH=$(mktemp -d)
  58         SESSION_NAME="kernel_enable_after_start"
  59
  60         create_lttng_session_ok $SESSION_NAME $TRACE_PATH
  61
  62         lttng_enable_kernel_event $SESSION_NAME "sched_switch"
  63
  64         start_lttng_tracing_ok
  65         lttng_enable_kernel_event $SESSION_NAME "sched_process_exit"
  66
  67         # Running a process and waiting for its completion forces the triggering of
  68         # sched_switch and exit events
  69         eval ${TESTCMD}
  70         stop_lttng_tracing_ok
  71
  72         validate_trace "sched_switch" $TRACE_PATH
  73         validate_trace "sched_process_exit" $TRACE_PATH
  74
  75         destroy_lttng_session_ok $SESSION_NAME
  76
  77         rm -rf $TRACE_PATH
  78 }
  79
  80 # MUST set TESTDIR before calling those functions
  81 plan_tests $NUM_TESTS
  82
  83 print_test_banner "$TEST_DESC"
  84
  85 if [ "$(id -u)" == "0" ]; then
  86         isroot=1
  87 else
  88         isroot=0
  89 fi
  90
  91 skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
  92 {
  93         start_lttng_sessiond
  94
  95         test_event_basic
  96         test_enable_after_start
  97
  98         stop_lttng_sessiond
  99 }