add flag harakiri-only-graceful

this setting can be useful for cases when graceful harakiri signal is handled by function in app and from that function is raised exception

core/init.c

@@ -207,6 +207,8 @@ void uwsgi_init_default() {
 	uwsgi.mule_msg_recv_size = 65536;
 
 	uwsgi.harakiri_graceful_signal = SIGTERM;
+
+	uwsgi.harakiri_only_graceful = 0;
 }
 
 void uwsgi_setup_reload() {

core/master_utils.c

@@ -1683,7 +1683,8 @@ void trigger_harakiri(int i) {
 		}
 		if (!uwsgi.workers[i].pending_harakiri)
 			uwsgi.workers[i].harakiri_count++;
-		uwsgi.workers[i].pending_harakiri++;
+		if (!uwsgi.harakiri_only_graceful)
+			uwsgi.workers[i].pending_harakiri++;
 	}
 
 }

core/uwsgi.c

@@ -62,6 +62,7 @@ static struct uwsgi_option uwsgi_base_options[] = {
 	{"harakiri-verbose", no_argument, 0, "enable verbose mode for harakiri", uwsgi_opt_true, &uwsgi.harakiri_verbose, 0},
 	{"harakiri-graceful-timeout", required_argument, 0, "interval between graceful harakiri attempt and a sigkill", uwsgi_opt_set_int, &uwsgi.harakiri_graceful_timeout, 0},
 	{"harakiri-graceful-signal", required_argument, 0, "use this signal instead of sigterm for graceful harakiri attempts", uwsgi_opt_set_int, &uwsgi.harakiri_graceful_signal, 0},
+	{"harakiri-only-graceful", required_argument, 0, "use only graceful harakiri", uwsgi_opt_true, &uwsgi.harakiri_only_graceful, 0},
 	{"harakiri-queue-threshold", required_argument, 0, "only trigger harakiri if queue is greater than this threshold", uwsgi_opt_set_int, &uwsgi.harakiri_queue_threshold, 0},
 	{"harakiri-no-arh", no_argument, 0, "do not enable harakiri during after-request-hook", uwsgi_opt_true, &uwsgi.harakiri_no_arh, 0},
 	{"no-harakiri-arh", no_argument, 0, "do not enable harakiri during after-request-hook", uwsgi_opt_true, &uwsgi.harakiri_no_arh, 0},

uwsgi.h

@@ -2488,6 +2488,7 @@ struct uwsgi_server {
 	int harakiri_verbose;
 	int harakiri_graceful_timeout;
 	int harakiri_graceful_signal;
+	int harakiri_only_graceful;
 	int harakiri_queue_threshold;
 	int harakiri_no_arh;