From 9648de5798eee557bd0ff8acaf3712ddcd7c22e3 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 4 May 2016 19:05:18 +0200 Subject: [PATCH 1/1] logind: don't include session lists in PropertyChanged messages If we have a lot of simultaneous sessions we really shouldn't send the full list of active sessions with each PropertyChanged message for user and seat objects, as that can become quite substantial data, we probably shouldn't dump on the bus on each login and logout. Note that the global list of sessions doesn't send out changes like this either, it only supports requesting the session list with ListSessions(). If cients want to get notified about sessions coming and going they should subscribe to SessionNew and SessionRemoved signals, and clients generally do that already. This is kind of an API break, but then again the fact that this was included was never documented. --- src/login/logind-seat-dbus.c | 2 +- src/login/logind-user-dbus.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/login/logind-seat-dbus.c b/src/login/logind-seat-dbus.c index 3cee10d00..f934a5326 100644 --- a/src/login/logind-seat-dbus.c +++ b/src/login/logind-seat-dbus.c @@ -306,7 +306,7 @@ const sd_bus_vtable seat_vtable[] = { SD_BUS_PROPERTY("CanMultiSession", "b", property_get_can_multi_session, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("CanTTY", "b", property_get_can_tty, 0, SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("CanGraphical", "b", property_get_can_graphical, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, 0), SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), diff --git a/src/login/logind-user-dbus.c b/src/login/logind-user-dbus.c index b73f9ea69..af6392e02 100644 --- a/src/login/logind-user-dbus.c +++ b/src/login/logind-user-dbus.c @@ -245,7 +245,7 @@ const sd_bus_vtable user_vtable[] = { SD_BUS_PROPERTY("Slice", "s", NULL, offsetof(User, slice), SD_BUS_VTABLE_PROPERTY_CONST), SD_BUS_PROPERTY("Display", "(so)", property_get_display, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0), - SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, 0), SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), -- 2.30.2