Fix: add missing synchronization point for before app test case

Fixes a race where the application could generate all its events before
trace start.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Conflicts:
	tests/utils/testapp/gen-ust-events/gen-ust-events.c

diff --git a/tests/regression/tools/snapshots/test_ust_streaming b/tests/regression/tools/snapshots/test_ust_streaming
index 55c1087d9e673ae0aae50e65eb87e10aa23faef1..ef38bd59914d2d648a1b92b17e38f4c0cd5e8bd4 100755 (executable)
--- a/tests/regression/tools/snapshots/test_ust_streaming
+++ b/tests/regression/tools/snapshots/test_ust_streaming
@@ -58,7 +58,7 @@ function snapshot_add_output ()
 # Start trace application and return once one event has been hit.
 function start_test_app()
 {
-       local tmp_file="/tmp/lttng_test_ust.42.file"
+       local tmp_file=$(mktemp -u)
 
        # Start application with a temporary file.
        $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT $tmp_file &

diff --git a/tests/regression/tools/snapshots/ust_test b/tests/regression/tools/snapshots/ust_test
index 552eed2312c0abd91b9bbe008368f850ee7e180c..e839b84bfa364590e8fb054cbf3791939b3587bb 100755 (executable)
--- a/tests/regression/tools/snapshots/ust_test
+++ b/tests/regression/tools/snapshots/ust_test
@@ -49,7 +49,7 @@ NUM_TESTS=$(($NUM_TESTS + ($NR_SNAPSHOT * 2)))
 
 function start_test_app()
 {
-       local tmp_file="/tmp/lttng_test_ust.42.file"
+       local tmp_file=$(mktemp -u)
 
        # Start application with a temporary file.
        $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT $tmp_file &

diff --git a/tests/regression/tools/streaming/test_ust b/tests/regression/tools/streaming/test_ust
index 480717515b49d3add63d213adee981ecfd06a053..e6a0bb846569117ee4add0fb11215cd022120653 100755 (executable)
--- a/tests/regression/tools/streaming/test_ust
+++ b/tests/regression/tools/streaming/test_ust
@@ -49,40 +49,51 @@ function lttng_create_session_uri
 
 function test_ust_before_start ()
 {
+       local file_sync_after_first=$(mktemp -u)
+       local file_sync_before_last=$(mktemp -u)
+
        diag "Test UST streaming BEFORE tracing starts"
        lttng_create_session_uri
        enable_ust_lttng_event $SESSION_NAME $EVENT_NAME
 
        # Run 5 times with a 1 second delay
-       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT >/dev/null 2>&1 &
-
-       #FIXME: racy missing synchro
+       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT ${file_sync_after_first} ${file_sync_before_last} /dev/null 2>&1 &
 
        start_lttng_tracing $SESSION_NAME
+
+       touch ${file_sync_before_last}
+
        # Wait for the applications started in background
        wait
 
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
+       rm -f ${file_sync_after_first}
+       rm -f ${file_sync_before_last}
 }
 
 function test_ust_after_start ()
 {
+       local file_sync_after_first=$(mktemp -u)
+
        diag "Test UST streaming AFTER tracing starts"
        lttng_create_session_uri
        enable_ust_lttng_event $SESSION_NAME $EVENT_NAME
        start_lttng_tracing $SESSION_NAME
 
        # Run 5 times with a 1 second delay
-       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT >/dev/null 2>&1
+       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT ${file_sync_after_first} >/dev/null 2>&1
 
-       #FIXME: racy missing synchro
+       while [ ! -f "${file_sync_after_first}" ]; do
+               sleep 0.5
+       done
 
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
        # Wait for the applications started in background
        wait
+       rm -f ${file_sync_after_first}
 }
 
 plan_tests $NUM_TESTS

diff --git a/tests/regression/ust/before-after/test_before_after b/tests/regression/ust/before-after/test_before_after
index 1535f3627bbd25855573901e69de69bf4b2bf9ed..460b04c4e9e6f09fe657a9d05bb94a47622b5a21 100755 (executable)
--- a/tests/regression/ust/before-after/test_before_after
+++ b/tests/regression/ust/before-after/test_before_after
@@ -57,22 +57,27 @@ function test_before_apps()
 function test_after_apps()
 {
        local out
+       local file_sync_after_first=$(mktemp -u)
+       local file_sync_before_last=$(mktemp -u)
 
        create_lttng_session $SESSION_NAME $TRACE_PATH
        enable_ust_lttng_event $SESSION_NAME $EVENT_NAME
 
-       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT &
+       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT ${file_sync_after_first} ${file_sync_before_last} &
        ok $? "Application started in background."
 
-       #FIXME: racy missing synchronization
-
        start_lttng_tracing $SESSION_NAME
 
+       touch ${file_sync_before_last}
+
        wait
 
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
+       rm -f ${file_sync_after_first}
+       rm -f ${file_sync_before_last}
+
        validate_trace $EVENT_NAME $TRACE_PATH
        out=$?
 

diff --git a/tests/regression/ust/buffers-pid/test_buffers_pid b/tests/regression/ust/buffers-pid/test_buffers_pid
index 0258e890cd4bb02b4c6b9400ff98ffaf74f30dc0..c95a4a1f9f7c4acb9a51210f00db3ee531f0a255 100755 (executable)
--- a/tests/regression/ust/buffers-pid/test_buffers_pid
+++ b/tests/regression/ust/buffers-pid/test_buffers_pid
@@ -74,22 +74,26 @@ test_after_multiple_apps() {
 test_before_multiple_apps() {
        local out
        local i
+       local file_sync_after_first=$(mktemp -u)
+       local file_sync_before_last=$(mktemp -u)
 
        diag "Start multiple applications BEFORE tracing is started"
 
        for i in `seq 1 5`; do
-               $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT >/dev/null 2>&1 &
+               $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT ${file_sync_after_first}_${i} ${file_sync_before_last}_${i} >/dev/null 2>&1 &
                ok $? "Start application $i for tracing"
        done
 
-       #FIXME: racy missing synchronization
-
        # BEFORE application is spawned
        create_lttng_session $SESSION_NAME $TRACE_PATH
        enable_channel_per_pid $SESSION_NAME "channel0"
        enable_ust_lttng_event $SESSION_NAME $EVENT_NAME "channel0"
        start_lttng_tracing $SESSION_NAME
 
+       for i in `seq 1 5`; do
+               touch ${file_sync_before_last}_${i}
+       done
+
        diag "Waiting for applications to end"
        wait
        pass "Waiting done"
@@ -97,6 +101,11 @@ test_before_multiple_apps() {
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
+       for i in `seq 1 5`; do
+               rm -f ${file_sync_after_first}_${i}
+               rm -f ${file_sync_before_last}_${i}
+       done
+
        out=$(babeltrace $TRACE_PATH | grep $EVENT_NAME | wc -l)
        if [ $out -eq 0 ]; then
                fail "Trace validation"
@@ -136,6 +145,8 @@ test_after_app() {
 
 test_before_app() {
        local out
+       local file_sync_after_first=$(mktemp -u)
+       local file_sync_before_last=$(mktemp -u)
 
        diag "Start application BEFORE tracing is started"
 
@@ -145,18 +156,21 @@ test_before_app() {
        enable_channel_per_pid $SESSION_NAME "channel0"
        enable_ust_lttng_event $SESSION_NAME $EVENT_NAME "channel0"
 
-       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT &
+       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT ${file_sync_after_first} ${file_sync_before_last} &
        ok $? "Start application to trace"
 
-       #FIXME: racy missing synchronization
-
        start_lttng_tracing $SESSION_NAME
 
+       touch ${file_sync_before_last}
+
        wait
 
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
+       rm -f ${file_sync_after_first}
+       rm -f ${file_sync_before_last}
+
        out=$(babeltrace $TRACE_PATH | grep $EVENT_NAME | wc -l)
        if [ $out -eq 0 ]; then
                fail "Trace validation"

diff --git a/tests/regression/ust/java-jul/test_java_jul b/tests/regression/ust/java-jul/test_java_jul
index d16880f277aa77ad9da5d10d8630340be3957c5a..d32d9ed4564e9901b639b0588f2f3bdf217e6f61 100755 (executable)
--- a/tests/regression/ust/java-jul/test_java_jul
+++ b/tests/regression/ust/java-jul/test_java_jul
@@ -38,6 +38,7 @@ function run_app
        local finest_tp=$1
        local fire_second_tp=$2
 
+       #FIXME: app should have synchro.
        java -cp $JAVA_CP -Djava.library.path="/usr/local/lib:/usr/lib" $TESTAPP_NAME $NR_ITER $NR_MSEC_WAIT $finest_tp $fire_second_tp >/dev/null 2>&1
 }
 
@@ -89,6 +90,9 @@ function enable_jul_filter_loglevel_only()
 
 function test_jul_before_start ()
 {
+       local file_sync_after_first=$(mktemp -u)
+       local file_sync_before_last=$(mktemp -u)
+
        diag "Test JUL application BEFORE tracing starts"
        create_lttng_session $SESSION_NAME $TRACE_PATH
        enable_jul_lttng_event $SESSION_NAME $EVENT_NAME
@@ -96,16 +100,19 @@ function test_jul_before_start ()
        # Run 5 times with a 1 second delay
        run_app_background
 
-       #FIXME: racy missing synchronization
-
        start_lttng_tracing $SESSION_NAME
 
+       touch ${file_sync_before_last}
+
        # Wait for the applications started in background
        wait
 
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
+       rm -f ${file_sync_after_first}
+       rm -f ${file_sync_before_last}
+
        # Validate test. Expecting all events.
        trace_match_only $EVENT_NAME $NR_ITER $TRACE_PATH
        if [ $? -ne 0 ]; then

diff --git a/tests/regression/ust/java-log4j/test_java_log4j b/tests/regression/ust/java-log4j/test_java_log4j
index 11845a0bbf049324e18ca9b27e96c406171440b5..a0b7cdc0f9592bb6a5d567ed71e1183fead22f23 100755 (executable)
--- a/tests/regression/ust/java-log4j/test_java_log4j
+++ b/tests/regression/ust/java-log4j/test_java_log4j
@@ -39,6 +39,7 @@ function run_app
        local debug_tp=$1
        local fire_second_tp=$2
 
+       # FIXME: test app should have synchro.
        java -cp $JAVA_CP -Djava.library.path="/usr/local/lib:/usr/lib" $TESTAPP_NAME $NR_ITER $NR_MSEC_WAIT $debug_tp $fire_second_tp >/dev/null 2>&1
 }
 
@@ -90,6 +91,9 @@ function enable_log4j_filter_loglevel_only()
 
 function test_log4j_before_start ()
 {
+       local file_sync_after_first=$(mktemp -u)
+       local file_sync_before_last=$(mktemp -u)
+
        diag "Test LOG4J application BEFORE tracing starts"
        create_lttng_session $SESSION_NAME $TRACE_PATH
        enable_log4j_lttng_event $SESSION_NAME $EVENT_NAME
@@ -97,16 +101,19 @@ function test_log4j_before_start ()
        # Run 5 times with a 1 second delay
        run_app_background
 
-       #FIXME: racy missing synchronization
-
        start_lttng_tracing $SESSION_NAME
 
+       touch ${file_sync_before_last}
+
        # Wait for the applications started in background
        wait
 
        stop_lttng_tracing $SESSION_NAME
        destroy_lttng_session $SESSION_NAME
 
+       rm -f ${file_sync_after_first}
+       rm -f ${file_sync_before_last}
+
        # Validate test. Expecting all events.
        trace_match_only $EVENT_NAME $NR_ITER $TRACE_PATH
        if [ $? -ne 0 ]; then

diff --git a/tests/regression/ust/nprocesses/test_nprocesses b/tests/regression/ust/nprocesses/test_nprocesses
index ca0f9d416cba74e08eafecf04d598d867474fa46..8eed95fcaa911f8f437f63d26a536302f3155b1d 100755 (executable)
--- a/tests/regression/ust/nprocesses/test_nprocesses
+++ b/tests/regression/ust/nprocesses/test_nprocesses
@@ -46,15 +46,16 @@ start_lttng_sessiond
 
 # Start tests. Each is an infinite tracing loop.
 
+file_sync_after_first=$(mktemp -u)
+file_sync_before_last=$(mktemp -u)
+
 diag "Starting $NUM_PROCESS test applications"
 for i in `seq 1 $NUM_PROCESS`
 do
-       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT >/dev/null 2>&1 &
+       $TESTAPP_BIN $NR_ITER $NR_USEC_WAIT ${file_sync_after_first} ${file_sync_before_last} >/dev/null 2>&1 &
        APPS_PID="${APPS_PID} ${!}"
 done
 
-#FIXME: racy missing synchronization
-
 diag "Waiting for applications to be registered to sessiond"
 
 reg_app_count=0
@@ -72,13 +73,15 @@ create_lttng_session $SESSION_NAME $TRACE_PATH
 enable_ust_lttng_event $SESSION_NAME $EVENT_NAME
 start_lttng_tracing $SESSION_NAME
 
+touch ${file_sync_before_last}
+
 # We don't validate whether the applications have traced here, rather
 # just that they registered to sessiond (above).
 
 stop_lttng_tracing $SESSION_NAME
 destroy_lttng_session $SESSION_NAME
 
-#FIXME/TODO: add validation after fixing racy synchroniaation
+#TODO: add trace validation.
 
 rm -rf $TRACE_PATH
 
@@ -90,4 +93,7 @@ done
 APPS_PID=
 pass "Stopped all spawned applications"
 
+rm -f ${file_sync_after_first}
+rm -f ${file_sync_before_last}
+
 stop_lttng_sessiond

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 53db813e1758e0921b02c7a45a496053be769929..7937fa27dd3a9e22e253404df6ec462768670eda 100755 (executable)
--- a/tests/regression/ust/periodical-metadata-flush/test_periodical_metadata_flush
+++ b/tests/regression/ust/periodical-metadata-flush/test_periodical_metadata_flush
@@ -27,7 +27,7 @@ SESSION_NAME="periodical-flush"
 EVENT_NAME="tp:tptest"
 BIN_NAME="gen-nevents"
 NUM_TESTS=38
-APP_TMP_FILE="/tmp/lttng_test_ust.42.file"
+APP_TMP_FILE=$(mktemp -u)
 APPS_PID=
 
 source $TESTDIR/utils/utils.sh