Rework property getters to use a vfunc so we can take the fast path
and avoid allocating memory for both the skeleton and the proxy
cases. This requires some special case because of how GVariant expects
you to free memory in some cases, see #657100. Add test cases for
this.
Document the _get_ functions as not being thread-safe and also
generate _dup_ C getters (which are thread-safe).
Mark all the generated _get_, _dup_ and _set_ as (skip) as non-C
languages should just use GObject properties and not the (socalled)
"C binding".
Signed-off-by: David Zeuthen <davidz@redhat.com>
Define USE_SYSTEM_PCRE for all configurations which uses the PCRE that
was already built and "installed" beforehand (i.e. the *_ExtPCRE
configurations) so that the compilation will not pick up the
GLib-bundled pcre.h when one wants to use the PCRE "installation" on
his/her system.
The main rationale for adding it was to avoid having gnome-shell
mmap'ing /etc/localtime once a second. However, we can just as easily
run inotify there, and given no one else was clamoring for a way to
detect when the time zone changes, I don't see a need for public API
here - at least not yet.
In the bigger picture, I just don't believe that the vast majority of
applications are going to go out of their way to instantiate and keep
around a random GTimeZoneMonitor class. And if they do, it's has the
side effect that for other bits of code in the process, local GDateTime
instances may start varying again!
So, if code can't rely on local GDateTime instances being in a
consistent state anyways, let's just do that always. The
documentation now says that this is the case. Applications have
always been able to work in a consistent local time zone by
instantiating a zone and then using it for GDateTime constructors.
We fix the "gnome-shell stats /etc/localtime once a second" issue by
using timerfd (in glib) and inotify (in gnome-shell).
https://bugzilla.gnome.org/show_bug.cgi?id=655129
-Added glib/ghmac.h to the list of files to copy during the "install" stage
-Cleaned up a bit (glib-2.0->glib-$(ApiVersion), where $(ApiVersion) is
2.0)
This makes g_date_time_format() react to LC_TIME, which is
what people expect.
Translators: this change means that the GDateTime strings
are only used when the C library does not already provide
suitable translated strings for these (month names, etc).
* Update documentation to note that GCancellable can be used
concurrently by multiple operations.
* Add documentation to g_cancellable_reset that behavior is
undefined if called from within cancelled handler.
* Add test for multiple concurrent operations using the same
cancellable.
https://bugzilla.gnome.org/show_bug.cgi?id=656387
Destroying a GDBusProxy in a thread used to race with NameOwnerChanged
being delivered to the main context's thread (GNOME #651133).
Also, g_dbus_proxy_call_sync in a thread would race with NameOwnerChanged
being delivered to the main context's thread and rewriting the name_owner
(GNOME #656039).
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=656039
Bug-NB: NB#259760
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Signed-off-by: David Zeuthen <davidz@redhat.com>
This changes the meaning of "properties_lock" from "lock for D-Bus
properties" to "lock for GObject properties".
The most common problem, and the only one I've reproduced in a regression
test, is name_owner, which can be updated by the thread that owns
the GDBusProxy's main context (i.e. the thread-default main context of
the thread that constructed it) at the same time that a blocking call
is made. When a GDBusProxy is constructed in a thread-pool thread for
short-term use, the main context will typically be the global default
main context (which is actively running in the main thread!), making
this extremely problematic.
The interface info is perhaps a theoretical concern - one thread could
conceivably set it at the same time that another thread uses it, but only
in relatively pathological situations. The current API for this does have
the problem that it returns a borrowed ref, but interface info is
hopefully permanent anyway.
The default timeout is probably only a theoretical concern - it's just an
int, so writes are indivisible, and there's no worry about whether
something has been freed - but to be safe, let's hold the lock for that
too.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=656039
Bug-NB: NB#259760
Signed-off-by: David Zeuthen <davidz@redhat.com>
This removes the need for async_init_get_name_owner_cb to cope with being
called without a real GAsyncResult, and will simplify the addition of
correct thread-locking.
In async_init_data_set_name_owner, use the name_owner parameter instead
of the corresponding member of GDBusProxyPrivate, partly to reduce
pointer-chasing but mainly to avoid needing to hold the lock.
Signed-off-by: David Zeuthen <davidz@redhat.com>
These ought to have thread-locking, and having it in the accessor seems
better than duplicating it here.
Signed-off-by: David Zeuthen <davidz@redhat.com>
If you run:
( cd gio/tests && G_DBUS_DEBUG=all ./gdbus-proxy-well-known-name )
you can see that in the case where the name com.example.TestService isn't
owned yet, the GDBusProxy calls GetAll() with no destination, resulting
in an error reply from the peer (the dbus-daemon itself). That's clearly
not right!
However, if priv->name is NULL, that indicates the special case where we
really do want to talk directly to a peer, instead of via the bus daemon
(most likely to be used on peer-to-peer connections); in that special
case, do call GetAll().
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Signed-off-by: David Zeuthen <davidz@redhat.com>
This is needed because the proxy may need to update its internal state
which a signal handler connected to the manager may rely on.
Signed-off-by: David Zeuthen <davidz@redhat.com>
