make test: properly handle ctrl-c

Change-Id: Iab88886ebc1582626813777ea45ce97fc8e36443
Signed-off-by: Klement Sekera <ksekera@cisco.com>

test/Makefile

@@ -13,6 +13,14 @@ else
 VPP_PIDS=$(shell pgrep -d, -x vpp_main)
 endif
 
+ifeq ($(DEBUG),gdb)
+FORCE_FOREGROUND=1
+else ifeq ($(DEBUG),gdbserver)
+FORCE_FOREGROUND=1
+else
+FORCE_FOREGROUND=0
+endif
+
 verify-no-running-vpp:
 	@if [ "$(VPP_PIDS)" != "" ]; then \
 		echo; \
@@ -76,7 +84,7 @@ $(PAPI_INSTALL_DONE): $(PIP_PATCH_DONE)
 	@touch $@
 
 define retest-func
-	@bash -c "source $(PYTHON_VENV_PATH)/bin/activate && setsid scripts/run_with_cleanup.sh python run_tests.py -d $(TEST_DIR) $(UNITTEST_EXTRA_OPTS)"
+	@scripts/setsid_wrapper.sh $(FORCE_FOREGROUND) $(PYTHON_VENV_PATH)/bin/activate python run_tests.py -d $(TEST_DIR) $(UNITTEST_EXTRA_OPTS)
 endef
 
 .PHONY: sanity

test/scripts/run_in_venv_with_cleanup.sh

@@ -17,9 +17,22 @@ atexit() {
 	exit $rv
 }
 
-trap "atexit" SIGINT SIGTERM
+trap "atexit;" SIGINT SIGTERM
+
+FORCE_FOREGROUND=$1
+shift
+
+source $1
+shift
+
+if [[ "${FORCE_FOREGROUND}" == "1" ]]
+then
+	$*
+else
+	$* &
+	wait
+fi
 
-$*
 rv=$?
 atexit
 exit $rv

test/scripts/setsid_wrapper.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+if [[ "$1" == "1" ]]
+then
+	setsid scripts/run_in_venv_with_cleanup.sh $*
+	pid=$!
+else
+	setsid scripts/run_in_venv_with_cleanup.sh $* &
+	pid=$!
+	trap "echo setsid_wrapper.sh: got signal, killing child pid ${pid}; kill ${pid}; sleep .1;" SIGINT SIGTERM
+	wait
+fi