Fix: tests: add missing wait, document missing synchro

[lttng-tools.git] / tests / regression / ust / periodical-metadata-flush / test_periodical_metadata_flush

diff --git a/tests/regression/ust/periodical-metadata-flush/test_periodical_metadata_flush b/tests/regression/ust/periodical-metadata-flush/test_periodical_metadata_flush
index e4199652bce1a456333ca0d88cbe869a5b590f96..53db813e1758e0921b02c7a45a496053be769929 100755 (executable)
--- a/tests/regression/ust/periodical-metadata-flush/test_periodical_metadata_flush
+++ b/tests/regression/ust/periodical-metadata-flush/test_periodical_metadata_flush
@@ -28,6 +28,7 @@ EVENT_NAME="tp:tptest"
 BIN_NAME="gen-nevents"
 NUM_TESTS=38
 APP_TMP_FILE="/tmp/lttng_test_ust.42.file"
+APPS_PID=
 
 source $TESTDIR/utils/utils.sh
 
@@ -106,7 +107,9 @@ function start_trace_app()
 {
        # Start application with a temporary file.
        $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT $APP_TMP_FILE &
-       ok $? "Start application to trace"
+       ret=$?
+       APPS_PID="${APPS_PID} ${!}"
+       ok $ret "Start application to trace"
 }
 
 function start_check_trace_app()
@@ -115,9 +118,20 @@ function start_check_trace_app()
        check_app_tmp_file
 }
 
+
+function wait_trace_apps()
+{
+       for p in ${APPS_PID}; do
+               wait ${p} 2>/dev/null
+       done
+       APPS_PID=
+}
+
 test_after_app_pid() {
        local out
 
+       APPS_PID=
+
        diag "Start application AFTER tracing is started"
 
        create_lttng_session $SESSION_NAME $TRACE_PATH
@@ -133,7 +147,9 @@ test_after_app_pid() {
        # Make sure the application does not generate any more data,
        # thus ensuring that we are not flushing a packet concurrently
        # with validate_trace.
-       killall -SIGSTOP -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGSTOP ${p}
+       done
 
        # Give time to the consumer to write inflight data.
        sleep 2
@@ -141,11 +157,14 @@ test_after_app_pid() {
        validate_trace
        out=$?
 
-       killall -SIGKILL -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGKILL ${p}
+               wait ${p} 2>/dev/null
+       done
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
-       wait
+       wait_trace_apps
 
        return $out
 }
@@ -154,6 +173,8 @@ test_before_app_pid() {
        local out
        local tmp_file="/tmp/lttng_test_ust.42.file"
 
+       APPS_PID=
+
        diag "Start application BEFORE tracing is started"
 
        start_trace_app
@@ -172,7 +193,9 @@ test_before_app_pid() {
        # Make sure the application does not generate any more data,
        # thus ensuring that we are not flushing a packet concurrently
        # with validate_trace.
-       killall -SIGSTOP -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGSTOP ${p}
+       done
 
        # Give time to the consumer to write inflight data.
        sleep 2
@@ -180,11 +203,15 @@ test_before_app_pid() {
        validate_trace
        out=$?
 
-       killall -SIGKILL -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGKILL ${p}
+               wait ${p} 2>/dev/null
+       done
+
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
-       wait
+       wait_trace_apps
 
        return $out
 }
@@ -192,6 +219,8 @@ test_before_app_pid() {
 test_after_app_uid() {
        local out
 
+       APPS_PID=
+
        diag "Start application AFTER tracing is started"
 
        create_lttng_session $SESSION_NAME $TRACE_PATH
@@ -207,7 +236,10 @@ test_after_app_uid() {
        # Make sure the application does not generate any more data,
        # thus ensuring that we are not flushing a packet concurrently
        # with validate_trace.
-       killall -SIGSTOP -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGSTOP ${p}
+       done
+
 
        # Give time to the consumer to write inflight data.
        sleep 2
@@ -215,11 +247,14 @@ test_after_app_uid() {
        validate_trace
        out=$?
 
-       killall -SIGKILL -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGKILL ${p}
+               wait ${p} 2>/dev/null
+       done
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
-       wait
+       wait_trace_apps
 
        return $out
 }
@@ -227,6 +262,8 @@ test_after_app_uid() {
 test_before_app_uid() {
        local out
 
+       APPS_PID=
+
        diag "Start application BEFORE tracing is started"
 
        # Start application before tracing
@@ -245,7 +282,9 @@ test_before_app_uid() {
        # Make sure the application does not generate any more data,
        # thus ensuring that we are not flushing a packet concurrently
        # with validate_trace.
-       killall -SIGSTOP -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGSTOP ${p}
+       done
 
        # Give time to the consumer to write inflight data.
        sleep 2
@@ -253,11 +292,14 @@ test_before_app_uid() {
        validate_trace
        out=$?
 
-       killall -SIGKILL -q $TESTAPP_NAME
+       for p in ${APPS_PID}; do
+               kill -s SIGKILL ${p}
+               wait ${p} 2>/dev/null
+       done
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
-       wait
+       wait_trace_apps
 
        return $out
 }