Re: [gtk-osx-users] Slow gdk_display_get_name() on macOS Sierra

By the way, I checked with wireshark and [NSHost currentHost] sends 3 pairs (IPv4 and IPv6) MDNS (multicast DNS used by Bonjour) PTR queries for the IPv6 address and waits for response until it times out. This really isn't a good method to be called by gdk_display_get_name() which could actually return arbitrary string because unlike X11 there will never be more displays.

By the way I noticed there's also g_get_host_name() which is a more user-friendly way to call gethostname().


On Wed, Feb 15, 2017 at 10:33 PM, Jiří Techet <techet gmail com> wrote:

after switching to macOS Sierra I (and another user) noticed that Geany whose OS X port I maintain starts significantly slower:

After some debugging it turns out it's the gdk_display_get_name() call which takes several seconds to complete. This function just returns [NSHost currentHost]; according to Apple documentation

the function can block for several seconds, depending on user's configuration. I found some more mentions of this behaviour, e.g.

Interestingly, simple unix gethostname() as used in Apple's implementation of the hostname command

returns immediately (at least for me). Would it be OK to use gethostname() in gdk_display_get_name()? Is there some specific reason why [NSHost currentHost] is used?



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