tests/regression/ust/nprocesses/test_nprocesses

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
   4 #
   5 # SPDX-License-Identifier: LGPL-2.1-only
   6
   7 NUM_PROCESS=30
   8 TEST_DESC="UST tracer - Generate $NUM_PROCESS process"
   9
  10 CURDIR=$(dirname "$0")/
  11 TESTDIR=$CURDIR/../../..
  12 NR_ITER=-1 # infinite loop
  13 NR_USEC_WAIT=1000000
  14 TESTAPP_PATH="$TESTDIR/utils/testapp"
  15 TESTAPP_NAME="gen-ust-events"
  16 TESTAPP_BIN="$TESTAPP_PATH/$TESTAPP_NAME/$TESTAPP_NAME"
  17 SESSION_NAME="ust-nprocesses"
  18 EVENT_NAME="tp:tptest"
  19 NUM_TESTS=9
  20 APP_PIDS=()
  21
  22 # shellcheck source-path=SCRIPTDIR/../../../
  23 source "${TESTDIR}/utils/utils.sh"
  24
  25 if [ ! -x "$TESTAPP_BIN" ]; then
  26         BAIL_OUT "No UST $TESTAPP_BIN binary detected."
  27 fi
  28
  29 # MUST set TESTDIR before calling those functions
  30
  31 plan_tests $NUM_TESTS
  32
  33 print_test_banner "$TEST_DESC"
  34
  35 # shellcheck disable=SC2119
  36 start_lttng_sessiond
  37
  38 # Start tests. Each is an infinite tracing loop.
  39
  40 file_sync_after_first=$(mktemp -u -t tmp.test_nprocesses_sync_after_first.XXXXXX)
  41 file_sync_before_last=$(mktemp -u -t tmp.test_nprocesses_sync_before_last.XXXXXX)
  42
  43 diag "Starting $NUM_PROCESS test applications"
  44 # shellcheck disable=SC2034
  45 for i in $(seq 1 $NUM_PROCESS)
  46 do
  47         $TESTAPP_BIN -i $NR_ITER -w $NR_USEC_WAIT \
  48                 --sync-after-first-event "${file_sync_after_first}" \
  49                 --sync-before-last-event "${file_sync_before_last}" >/dev/null 2>&1 &
  50         APP_PIDS+=(${!})
  51 done
  52
  53 diag "Waiting for applications to be registered to sessiond"
  54
  55 reg_app_count=0
  56 while [ $reg_app_count -ne $NUM_PROCESS ]; do
  57         listing=$("${TESTDIR}/../src/bin/lttng/${LTTNG_BIN}" list -u)
  58         reg_app_count=$(echo -n "${listing}" | sed "s#$TESTAPP_BIN#$TESTAPP_BIN\n#g" | grep -c "$TESTAPP_BIN")
  59 done
  60
  61 pass "All applications are registered to sessiond"
  62
  63 TRACE_PATH=$(mktemp -d -t tmp.test_nprocesses_trace_path.XXXXXX)
  64
  65 create_lttng_session_ok $SESSION_NAME "${TRACE_PATH}"
  66
  67 enable_ust_lttng_event_ok $SESSION_NAME $EVENT_NAME
  68 start_lttng_tracing_ok $SESSION_NAME
  69
  70 touch "${file_sync_before_last}"
  71
  72 # We don't validate whether the applications have traced here, rather
  73 # just that they registered to sessiond (above).
  74
  75 stop_lttng_tracing_ok $SESSION_NAME
  76 destroy_lttng_session_ok $SESSION_NAME
  77
  78 #TODO: add trace validation.
  79
  80 rm -rf "${TRACE_PATH}"
  81
  82 diag "Stopping all spawned applications"
  83 kill "${APP_PIDS[@]}"
  84 wait "${APP_PIDS[@]}" 2>/dev/null
  85 APP_PIDS=()
  86 pass "Stopped all spawned applications"
  87
  88 rm -f "${file_sync_after_first}"
  89 rm -f "${file_sync_before_last}"
  90
  91 # shellcheck disable=SC2119
  92 stop_lttng_sessiond