diff options
| -rw-r--r-- | dbus/dbus-bus.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/dbus/dbus-bus.c b/dbus/dbus-bus.c index 8cb82eb8..ea4b1482 100644 --- a/dbus/dbus-bus.c +++ b/dbus/dbus-bus.c @@ -1434,11 +1434,17 @@ send_no_return_values (DBusConnection *connection, * If you pass #NULL for the error, this function will not * block; the match thus won't be added until you flush the * connection, and if there's an error adding the match - * (only possible error is lack of resources in the bus), - * you won't find out about it. + * you won't find out about it. This is generally acceptable, since the + * possible errors (including a lack of resources in the bus, the connection + * having exceeded its quota of active match rules, or the match rule being + * unparseable) are generally unrecoverable. * * If you pass non-#NULL for the error this function will - * block until it gets a reply. + * block until it gets a reply. This may be useful when using match rule keys + * introduced in recent versions of D-Bus, like 'arg0namespace', to allow the + * application to fall back to less efficient match rules supported by older + * versions of the daemon if the running version is not new enough; or when + * using user-supplied rules rather than rules hard-coded at compile time. * * Normal API conventions would have the function return * a boolean value indicating whether the error was set, |