Support runtime watchdogsubmit/tizen_unified/20170308.100409submit/tizen_3.0_wearable/20161015.000000submit/tizen_3.0_tv/20161015.000000submit/tizen_3.0_mobile/20161015.000000submit/tizen_3.0_ivi/20161010.000010submit/tizen_3.0_ivi/20161010.000000submit/tizen_3.0_common/20161104.104000submit/tizen_3.0.m2/20170104.093751submit/tizen/20160902.013139accepted/tizen/wearable/20160905.065435accepted/tizen/unified/20170309.033857accepted/tizen/tv/20160905.065418accepted/tizen/mobile/20160905.065401accepted/tizen/ivi/20160905.065451accepted/tizen/common/20160902.061950accepted/tizen/3.0/wearable/20161015.080358accepted/tizen/3.0/tv/20161016.003332accepted/tizen/3.0/mobile/20161015.032216accepted/tizen/3.0/ivi/20161011.053456accepted/tizen/3.0/common/20161114.110030accepted/tizen/3.0.m2/wearable/20170104.142253accepted/tizen/3.0.m2/tv/20170104.141956accepted/tizen/3.0.m2/mobile/20170104.141308tizen_3.0_tvtizen_3.0.m2tizen_3.0accepted/tizen_wearableaccepted/tizen_tvaccepted/tizen_mobileaccepted/tizen_iviaccepted/tizen_commonaccepted/tizen_3.0_wearableaccepted/tizen_3.0_tvaccepted/tizen_3.0_mobileaccepted/tizen_3.0_iviaccepted/tizen_3.0_commonaccepted/tizen_3.0.m2_wearableaccepted/tizen_3.0.m2_tvaccepted/tizen_3.0.m2_mobile

Previously, systemd did not support to change runtime watchdog.
However, recent systemd supports such functionality - https://github.com/systemd/systemd/commit/2787d83c2.
Thus, argos watchdog supports the feature.

Thanks to Mr.Sung(JungHak) (Original Idea from him)

Change-Id: I8ef1741c16867e46329c529365726821dd5d44d1

2 files changed, 49 insertions, 11 deletions

diff --git a/src/argos-common.c b/src/argos-smdl.c
index cbe79a4..d58b93d 100644
--- a/src/argos-common.c
+++ b/src/argos-smdl.c
@@ -14,9 +14,7 @@
  * limitations under the License.
  */
 
-/* Under development
- * In the future, tizen will support new watchdog system
- * based on resourced for enhanced heartbeat monitor */
+// This file will be used for smart deadlock watchdog backend
 
 int _aw_register(unsigned int timeout)
 {
diff --git a/src/argos-systemd.c b/src/argos-systemd.c
index 493f1f7..3afbb97 100644
--- a/src/argos-systemd.c
+++ b/src/argos-systemd.c
@@ -18,22 +18,62 @@
 #include <systemd/sd-daemon.h>
 #include <stdlib.h>
 
-/* In case of watchdog based on systemd sd_notify,
- * runtime registration does not support.
- * Thus, just check whether the watchdog is enabled or not*/
+#define SEC_TO_USEC (1000*1000)
+
+static unsigned int saved_timeout=0;
+
+/* Now, systemd support to enable/disable runtime watchdog */
+/* https://github.com/systemd/systemd/commit/2787d83c2 */
+int systemd_change_watchdog_timeout(unsigned int timeout)
+{
+	return sd_notifyf(0, "WATCHDOG_USEC=%llu", (unsigned long long) timeout*SEC_TO_USEC);
+}
+
 int _aw_register(unsigned int timeout)
 {
+	int ret;
 
-	if ( sd_watchdog_enabled(0, NULL) )
-		return 0;
-	else
+	ret = systemd_change_watchdog_timeout(timeout);
+	if(ret <=0)
 		return -1;
+
+	saved_timeout = timeout;
+	return 0;
 }
 
-/* NOT Support for systemd backend */
 int _aw_control(aw_op_e op, void *data)
 {
-	return -ENOTSUP;
+	int ret=-1;
+	unsigned int* timeout;
+
+	switch(op){
+	case AW_OP_DISABLE:
+		ret = systemd_change_watchdog_timeout(0);
+		break;
+
+	case AW_OP_ENABLE:
+		ret = systemd_change_watchdog_timeout(saved_timeout);
+		break;
+
+	case AW_OP_CHANGE_TIMEOUT:
+		timeout = (unsigned int*)(data);
+		if(timeout == NULL){
+			ret = -1;
+			break;
+		}
+		ret = systemd_change_watchdog_timeout(*timeout);
+		if(ret > 0)
+			saved_timeout = *timeout;
+		break;
+	default:
+		ret = -1;
+		break;
+	}
+
+	if(ret > 0)
+		return 0;
+
+	return -1;
 }
 
 int _aw_notify(void)