Commit Graph

42 Commits

Author SHA1 Message Date
Philip Withnall
5942cd7984 gio: Add SPDX license headers automatically
Add SPDX license (but not copyright) headers to all files which follow a
certain pattern in their existing non-machine-readable header comment.

This commit was entirely generated using the command:
```
git ls-files gio/*.[ch] | xargs perl -0777 -pi -e 's/\n \*\n \* This library is free software; you can redistribute it and\/or\n \* modify it under the terms of the GNU Lesser General Public/\n \*\n \* SPDX-License-Identifier: LGPL-2.1-or-later\n \*\n \* This library is free software; you can redistribute it and\/or\n \* modify it under the terms of the GNU Lesser General Public/igs'
```

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Helps: #1415
2022-05-18 09:18:52 +01:00
Philip Withnall
8e963e0e31 Port internal uses to use g_source_set_static_name()
This should reduce allocations.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
2021-07-26 11:01:07 +01:00
Philip Withnall
1a43d950b4 docs: Update various external links to use HEAD instead of master
Update several links to allow the remote to use its configured default
branch name, rather than specifying `master` as the default branch name.
This will help avoid breakage if any of these projects rename their
default branch in the future.

Fix a few of the links where they were hitting redirects or had moved.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Helps: #2348
2021-06-07 14:03:48 +01:00
Avinash Sonawane
5ce6ba287f docs: Replace git.gnome.org with gitlab.gnome.org urls 2021-03-24 16:18:53 +05:30
Philip Withnall
74250cd9c9 gio: Drop unnecessary volatile qualifiers from internal variables
These variables were already (correctly) accessed atomically. The
`volatile` qualifier doesn’t help with that.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Helps: #600
2020-11-20 14:40:19 +00:00
Philip Withnall
ab285899a6 gdbusconnection: Document main context iteration for unsubscriptions
Add a note to the documentation of
`g_dbus_connection_signal_unsubscribe()`, `g_bus_unwatch_name()` and
`g_bus_unown_name()` warning about the need to continue iterating the
caller’s thread-default `GMainContext` until the
unsubscribe/unwatch/unown operation is complete.

See the previous few commits and #1515 for an idea of the insidious bugs
that can be caused by not iterating the `GMainContext` until
everything’s synchronised.

Signed-off-by: Philip Withnall <withnall@endlessm.com>
2020-02-24 09:03:02 +00:00
Philip Withnall
ccbb2d8e8a gdbusnameowning: Subscribe to NameLost before calling RequestName
There was a slight race in name ownership: a gap between calling
`RequestName` (or receiving its reply) and subscribing to `NameLost`. In
that gap, another process could request and receive the name, and this
one wouldn’t know about it.

Fix that by subscribing to `NameAcquired` and `NameLost` before calling
`RequestName`, and then unsubscribing again if the subscriptions turn
out not to be necessary (if the process can’t own the requested name).

Spotted and diagnosed by Miika Karanki.

One of the tests needs an additional iteration of the main loop in order
to free all the signal closures before it can complete its checks.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Fixes: #1517
2020-02-16 10:00:31 +00:00
Philip Withnall
a434bfbb3d gdbusnameowning: Fix race between connection shutdown and NameLost
As with all D-Bus signal subscriptions, it’s possible for a signal
callback to be invoked in one thread (T1) while another thread (T2) is
unsubscribing from that signal. In this case, T1 is the main thread, and
T2 is the D-Bus connection worker thread which is unsubscribing all
signals as it’s in the process of closing.

Due to this possibility, all `user_data` for signal callbacks needs to
be referenced outside the lifecycle of the code which
subscribes/unsubscribes the signal. In other words, it’s not safe to
subscribe to a signal, store the subscription ID in a struct,
unsubscribe from the signal when freeing the struct, and dereference the
struct in the signal callback. The data passed to the signal callback
has to have its own strong reference.

Instead, it’s safe to subscribe to a signal and add a strong reference
to the struct, store the subscription ID in that struct, and unsubscribe
from the signal when the last external reference to your struct is
dropped. That unsubscription should break the refcount cycle between the
signal connection and the struct, and allow the struct to be completely
freed. Only with that approach is it safe to dereference the struct in
the signal callback, if there’s any possibility that the signal might be
unsubscribed from a separate thread.

The tests need specific additional main loop cycles to completely emit
the NameLost signal callback. Ideally they need refactoring, but this
will do (1000 test cycles passed).

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Fixes: #978
2020-01-20 15:13:52 +00:00
Дилян Палаузов
512655aa12 minor typos in the documentation (a/an) 2019-08-24 19:14:05 +00:00
Simon McVittie
7c97e3d784 gdbus: Check signature of NameAcquired, NameLost
Calling g_variant_get (parameters, "(&s)") when parameters has a
signature other than (s) is considered to be a programming error.
In practice the message bus (dbus-daemon or a reimplementation) should
always send the expected type, but be defensive.

(Modified by Philip Withnall to improve type check.)

Signed-off-by: Simon McVittie <smcv@collabora.com>
Signed-off-by: Philip Withnall <withnall@endlessm.com>

https://bugzilla.gnome.org/show_bug.cgi?id=784392
2017-08-07 17:31:31 +01:00
Matthias Clasen
f39024038f Disambiguate source names
This makes debugging more pleasant.
2017-06-28 19:50:57 -04:00
Sébastien Wilmet
3bf4a720c3 gio/: LGPLv2+ -> LGPLv2.1+
Sub-directories inside gio/ already processed in a previous commit:
- fam/
- gdbus-2.0/ (which contains only codegen/)
- gvdb/
- inotify/
- tests/
- win32/
- xdgmime/

Other sub-directories inside gio/:
- completion/: no license headers
- kqueue/: not LGPL, BSD-style license

https://bugzilla.gnome.org/show_bug.cgi?id=776504
2017-05-29 19:53:34 +02:00
Christian Hergert
18a33f72db introspection: use (nullable) or (optional) instead of (allow-none)
If we have an input parameter (or return value) we need to use (nullable).
However, if it is an (inout) or (out) parameter, (optional) is sufficient.

It looks like (nullable) could be used for everything according to the
Annotation documentation, but (optional) is more specific.
2016-11-22 14:14:37 -08:00
Ryan Lortie
d9de830b65 Convert remaining uses of 'Rename to:'
This was replaced by (rename-to) in 2013 (see bug 676133).

They're also causing gtk-doc trouble, so let's get rid of them.
2015-03-12 16:55:22 -04:00
Bastien Nocera
8792609e15 gio: Add names to idles and timeouts
This isn't too useful for some of the "return result in idle"
functions, but it's better than nothing.

https://bugzilla.gnome.org/show_bug.cgi?id=726872
2014-03-27 12:53:00 +01:00
Matthias Clasen
a03cee3b27 Convert remaining examples to links 2014-02-08 17:52:21 -05:00
Matthias Clasen
e7fd3de86d Eradicate links and xrefs
These are all replaced by markdown ref links.
2014-02-08 12:26:56 -05:00
Matthias Clasen
01be287689 gdbusnameowning: Convert docs to markdown 2014-02-01 10:22:43 -05:00
Daniel Mustieles
078dbda148 Updated FSF's address 2014-01-31 14:31:55 +01:00
Colin Walters
31aee73285 gdbusnameowning: Don't spew an error if we're releasing a name due to closing
The default GNOME 3.10 login process right now has gdm spawn a session
for the login screen, retaining the X server, but closing the session
bus.  Right now in this scenario many GNOME components such as
gnome-settings-daemon attempt to "clean up" on shutdown by releasing
their owned names.

But they're shutting down because the session bus went away, so
releasing the name is pointless, and presently spews an error into the
journal.

This patch avoids that error spew, which helps system administrators
find *real* problems.

https://bugzilla.gnome.org/show_bug.cgi?id=704567
2013-07-19 17:49:47 -04:00
Robert Ancell
4143842eb4 Add missing allow-none annotations for function parameters.
Found using:
find . -name '*.c' | xargs grep 'or %NULL' | grep ' \* @' | grep -v '@error' | grep -v allow-none
2012-03-31 20:34:28 +11:00
David Zeuthen
1fc897352e g_bus_own_name: fix race when unowning a name immediately after owning it
... and also add a test to verify that the fix works.

https://bugzilla.gnome.org/show_bug.cgi?id=662808

Signed-off-by: David Zeuthen <davidz@redhat.com>
2011-10-27 10:35:18 -04:00
Javier Jardón
8d3250016d gio: Use G_VALUE_INIT 2011-10-18 17:12:33 +01:00
Dan Winship
59f1f54655 Add g_main_context_ref_thread_default()
Add g_main_context_ref_thread_default(), which always returns a
reffed GMainContext, rather than sometimes returning a (non-reffed)
GMainContext, and sometimes returning NULL. This simplifies the
bookkeeping in any code that needs to keep a reference to the
thread-default context for a while.

https://bugzilla.gnome.org/show_bug.cgi?id=660994
2011-10-07 10:14:34 -04:00
Colin Walters
b74e2a720a Stop using glib-genmarshal at build time
To help cross compilation, don't use glib-genmarshal in our
build.  This is easy now that we have g_cclosure_marshal_generic().

In gobject/, add gmarshal.[ch] to git (making the existing entry
points stubs).

In gio/, simply switch to using g_cclosure_marshal_generic().

https://bugzilla.gnome.org/show_bug.cgi?id=652168
2011-06-20 17:24:07 -04:00
Matthias Clasen
402ad1958c Make the closure variants of name owning and watching actually work
The GClosure API is a bit funky (and badly documented), and requires
you to set a marshaller on the closure, and the marshaller has an
implicit 'this' argument, and the caller is reponsible for unsetting
the values after invoking the closure.

I've added some calls of the _with_closures variants to the
gdbus-names test now.
2010-08-07 17:10:17 -04:00
David Zeuthen
4a1c5a1b98 GDBus: Add GDBusSignalFlags and use it in g_dbus_connection_signal_subscribe()
This is currently unused but will probably be useful in the
future. For example, we could have a _ARG0_IS_PATH to specify that
arg0 should be used for arg0path.

This commit breaks API and ABI. Users of
g_dbus_connection_signal_subscribe() will need to port to this new
version.

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-07-19 15:05:10 -04:00
Ryan Lortie
5b946e0504 gio/: fully remove gioalias hacks 2010-07-07 19:53:22 -04:00
David Zeuthen
6d4ade4cf0 Bug 623143 – Never require non-closed connections
There's a couple of places in GDBus where it's a programming error
(e.g. we'll assert or spew via e.g. g_warning()) to use the API on a
closed connection.  This approach can never work since a
GDBusConnection can be closed at any point in time outside of
programmer control.

Just change the code to return a run-time error (e.g. return
G_IO_ERROR_CLOSED when sending messages, invoking methods) or silently
accept the request (e.g.  exporting objects, registering for signals)
without doing anything.

Note that a GDBusConnection object is always useless after being
closed - e.g.  there's no way to "reopen" a connection - the user will
have to create a new object and use that instead.

https://bugzilla.gnome.org/show_bug.cgi?id=623143

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-06-29 15:21:11 -04:00
Jürg Billeter
1ed105b19b GDBus: Sink closures in _with_closures functions
See https://bugzilla.gnome.org/show_bug.cgi?id=621092#c12

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-06-18 19:28:31 -04:00
Tomeu Vizoso
45e604d029 Add _with_closures alternative functions for those in GDBus that
accept more than one callback.

g_bus_own_name_with_closures
g_bus_own_name_on_connection_with_closures
g_bus_watch_name_with_closures
g_bus_watch_name_on_connection_with_closures
g_bus_watch_proxy_with_closures
g_bus_watch_proxy_on_connection_with_closures

https://bugzilla.gnome.org/show_bug.cgi?id=621092
2010-06-10 18:29:23 +02:00
Ryan Lortie
3160bcad6a GDBusConnection.call(): add 'reply_type' argument
This allows the caller to specify the reply type that they are expecting
for this call.  If the reply comes back with the wrong type, GDBus will
generate an appropriate error internally.

  - add a GVariantType * argument to g_dbus_connection_call() and
    _call_sync().

  - move the internal API for computing message types from introspection
    data to be based on GVariantType instead of strings.  Update users
    of this code.

  - have GDBusProxy pass this calculated GVariantType into
    g_dbus_connection_call().  Remove the checks done in GDBusProxy.

  - Update other users of the code (test cases, gdbus-tool, GSettings
    tool, etc).  In some cases, remove redundant checks; in some other
    cases, we are fixing bugs because no checking was done where it
    should have been.

Closes bug #619391.
2010-05-24 17:00:04 -04:00
David Zeuthen
68078ed648 GDBus: Nuke G_BUS_TYPE_NONE 2010-05-13 18:04:48 -04:00
Christian Persch
4ad4c306c3 Plug some mem leaks
g_variant_get (v, "s", &str) returns a string copy; use "&s" instead.

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-05-13 16:43:41 -04:00
David Zeuthen
869b4c6833 GDBus: Use call() instead of invoke_method()
Lots of people been suggesting this. We still use MethodInvocation /
method_invocation for handling incoming method calls so use call()
instead of invoke_method() helps to separate the client and server
facilities. Which is a good thing(tm).
2010-05-10 11:47:08 -04:00
Matthias Clasen
0cf467c2ca Update copyright years to include 2010 2010-05-09 13:14:55 -04:00
Matthias Clasen
8315eb77d5 Some documentation tweaks
Add links to the D-Bus docs in some places, and various
other additions.
2010-05-09 01:44:11 -04:00
David Zeuthen
46ce134d51 GDBus: Add new symbols to gio.symbols 2010-05-06 17:31:51 -04:00
David Zeuthen
fb1b4599a0 GDBus: Fix up i18n 2010-05-06 16:34:23 -04:00
David Zeuthen
0fd6498cd8 Add "Since: 2.26" to all new GDBus API 2010-05-06 16:02:08 -04:00
David Zeuthen
c490c14f4e Set up gtk-doc for GDBus
Also move send_credentials() and receive_credentials() to
GUnixConnection. This code might change, discussion is still ongoing
in

 https://bugzilla.gnome.org/show_bug.cgi?id=617483.
2010-05-06 15:31:45 -04:00
David Zeuthen
d0a14469d0 Initial GDBus code-drop from GDBus-standalone repo
Things compile and the test-suite passes. Still need to hook up
gio.symbols and docs. There are still a bunch of TODOs left in the
sources that needs to be addressed.

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-05-06 14:21:32 -04:00