From 3c223d9bec8517be9c4d234564b97ee1bd6c323b Mon Sep 17 00:00:00 2001
From: David Herrmann <dh.herrmann@googlemail.com>
Date: Mon, 19 Nov 2012 16:10:01 +0100
Subject: [PATCH] seat: add helpers to schedule sessions from the outside

Two new helpers to schedule a specific session or a session given by a
hint-number. These can be used by other subsystems to schedule
their/others sessions.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
---
 src/kmscon_seat.c | 39 +++++++++++++++++++++++++++++++++++++++
 src/kmscon_seat.h |  3 +++
 2 files changed, 42 insertions(+)

diff --git a/src/kmscon_seat.c b/src/kmscon_seat.c
index 3f0367a..3b037b3 100644
--- a/src/kmscon_seat.c
+++ b/src/kmscon_seat.c
@@ -830,6 +830,31 @@ struct conf_ctx *kmscon_seat_get_conf(struct kmscon_seat *seat)
 	return seat->conf_ctx;
 }
 
+void kmscon_seat_schedule(struct kmscon_seat *seat, unsigned int id)
+{
+	struct shl_dlist *iter;
+	struct kmscon_session *s, *next;
+
+	if (!seat)
+		return;
+
+	next = seat->dummy_sess;
+	shl_dlist_for_each(iter, &seat->sessions) {
+		s = shl_dlist_entry(iter, struct kmscon_session, list);
+		if (!s->enabled || seat->dummy_sess == s ||
+		    seat->current_sess == s)
+			continue;
+
+		next = s;
+		if (!id--)
+			break;
+	}
+
+	seat->scheduled_sess = next;
+	if (seat_has_schedule(seat))
+		seat_switch(seat);
+}
+
 int kmscon_seat_register_session(struct kmscon_seat *seat,
 				 struct kmscon_session **out,
 				 kmscon_session_cb_t cb,
@@ -994,6 +1019,20 @@ int kmscon_session_set_background(struct kmscon_session *sess)
 	return 0;
 }
 
+void kmscon_session_schedule(struct kmscon_session *sess)
+{
+	struct kmscon_seat *seat;
+
+	if (!sess || !sess->seat)
+		return;
+
+	seat = sess->seat;
+	seat->scheduled_sess = sess;
+	seat_reschedule(seat);
+	if (seat_has_schedule(seat))
+		seat_switch(seat);
+}
+
 void kmscon_session_enable(struct kmscon_session *sess)
 {
 	if (!sess || sess->enabled)
diff --git a/src/kmscon_seat.h b/src/kmscon_seat.h
index bcfabed..f70f2a6 100644
--- a/src/kmscon_seat.h
+++ b/src/kmscon_seat.h
@@ -90,6 +90,8 @@ struct uterm_input *kmscon_seat_get_input(struct kmscon_seat *seat);
 struct ev_eloop *kmscon_seat_get_eloop(struct kmscon_seat *seat);
 struct conf_ctx *kmscon_seat_get_conf(struct kmscon_seat *seat);
 
+void kmscon_seat_schedule(struct kmscon_seat *seat, unsigned int id);
+
 int kmscon_seat_register_session(struct kmscon_seat *seat,
 				 struct kmscon_session **out,
 				 kmscon_session_cb_t cb,
@@ -103,6 +105,7 @@ bool kmscon_session_is_registered(struct kmscon_session *sess);
 bool kmscon_session_is_active(struct kmscon_session *sess);
 int kmscon_session_set_foreground(struct kmscon_session *sess);
 int kmscon_session_set_background(struct kmscon_session *sess);
+void kmscon_session_schedule(struct kmscon_session *sess);
 
 void kmscon_session_enable(struct kmscon_session *sess);
 void kmscon_session_disable(struct kmscon_session *sess);