tree-wide: install matches asynchronously

Let's remove a number of synchronization points from our service
startups: let's drop synchronous match installation, and let's opt for
asynchronous instead.

Also, let's use sd_bus_match_signal() instead of sd_bus_add_match()
where we can.
This commit is contained in:
Lennart Poettering
2018-01-05 13:58:32 +01:00
parent 0c0b930647
commit 75152a4d6a
14 changed files with 183 additions and 196 deletions
+10 -9
View File
@@ -1059,7 +1059,6 @@ static int start_transient_service(
.inactive_enter_usec = USEC_INFINITY,
};
_cleanup_free_ char *path = NULL;
const char *mt;
c.bus = sd_bus_ref(bus);
@@ -1089,18 +1088,20 @@ static int start_transient_service(
if (!path)
return log_oom();
mt = strjoina("type='signal',"
"sender='org.freedesktop.systemd1',"
"path='", path, "',"
"interface='org.freedesktop.DBus.Properties',"
"member='PropertiesChanged'");
r = sd_bus_add_match(bus, &c.match, mt, on_properties_changed, &c);
r = sd_bus_match_signal_async(
bus,
&c.match,
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"PropertiesChanged",
on_properties_changed, NULL, &c);
if (r < 0)
return log_error_errno(r, "Failed to add properties changed signal.");
return log_error_errno(r, "Failed to request properties changed signal match: %m");
r = sd_bus_attach_event(bus, c.event, SD_EVENT_PRIORITY_NORMAL);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop.");
return log_error_errno(r, "Failed to attach bus to event loop: %m");
r = run_context_update(&c, path);
if (r < 0)