[PATCH v4 2/4] git-p4: add p4d timeout in tests

[larsxschneider@gmail.com]

From: Lars Schneider <larsxschneider@gmail.com>

In rare cases p4d seems to hang. This watchdog will kill the p4d
process after 300s in any case. That means each individual git p4 test
needs to finish before 300s or it will fail.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
---
 t/lib-git-p4.sh | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/t/lib-git-p4.sh b/t/lib-git-p4.sh
index 7548225..b1660f6 100644
--- a/t/lib-git-p4.sh
+++ b/t/lib-git-p4.sh
@@ -6,6 +6,10 @@
 # a subdirectory called "$git"
 TEST_NO_CREATE_REPO=NoThanks
 
+# Sometimes p4d seems to hang. Terminate the p4d process automatically after
+# the defined timeout in seconds.
+P4D_TIMEOUT=300
+
 . ./test-lib.sh
 
 if ! test_have_prereq PYTHON
@@ -81,6 +85,19 @@ start_p4d() {
 	# will be caught with the "kill -0" check below.
 	i=${P4D_START_PATIENCE:-300}
 	pid=$(cat "$pidfile")
+
+	timeout=$(($(date +%s) + $P4D_TIMEOUT))
+    while true
+	do
+		if test $(date +%s) -gt $timeout
+		then
+			kill -9 $pid
+			exit 1
+		fi
+		sleep 1
+	done &
+	watchdog_pid=$!
+
 	ready=
 	while test $i -gt 0
 	do
@@ -131,7 +148,8 @@ kill_p4d() {
 	done &&
 	# complain if it would not die
 	test_must_fail kill $pid >/dev/null 2>&1 &&
-	rm -rf "$db" "$cli" "$pidfile"
+	rm -rf "$db" "$cli" "$pidfile" &&
+	retry_until_fail kill -9 $watchdog_pid
 }
 
 cleanup_git() {
-- 
2.5.1