It’s quite common to see naked g_signal_connect() calls without a paired
g_signal_handler_disconnect(). This is commonly a bug which could lead
to uses of the callback user data after it’s been freed.
Document the best practices for avoiding this kind of bug by properly
disconnecting all signal handlers.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
Make it a little easier to find the GType conventions page, which I
guess should be the canonical guide to how to name things.
This adds a brief mention of the valid characters in a type name to the
conventions page.
https://bugzilla.gnome.org/show_bug.cgi?id=743018
We already do this in the normal case, might as well support it for the
dynamic type module case as well. This prevents seeing a warning when not
using the get_instance_private() in the dynamic type.
Using the register keyword triggers warnings on noteworthy compilers
(clang), since it's deprecated in C++ and at danger of being removed
from the language. There is no reason to use it since it isn't 1980
anymore.
https://bugzilla.gnome.org/show_bug.cgi?id=750918
Prevents race condition in function g_io_condition_get_type by ensuring
that the initialization section for 'etype' is executed only once
during a program's life time, and that concurrent threads are blocked
until initialization completes. This changes solves the problem that
concurrent threads could execute the check 'etype == 0' before any of
them had initialized it, which in turn meant that multiple threads
would then attempt to register the "GIOCondition" type.
https://bugzilla.gnome.org/show_bug.cgi?id=750386
It isn't actually doing anything, instead it is
being managed without actually being used.
This has the result that GBinding is now more
thread-safe.
https://bugzilla.gnome.org/show_bug.cgi?id=745013
Add a global lookup table for signal handlers. We already give
them a unique ID, so there is no good reason to pay for
non-constant lookups when disconnecting handlers.
https://bugzilla.gnome.org/show_bug.cgi?id=737009
This test checks the performance of connecting, disconnecting and
blocking many handlers. Various cases are checked: disconnect in
the same order, in the inverse order, at random. Connect to one
signal on a single object, to two signals on the same object, or
to the same signal on two different objects.
https://bugzilla.gnome.org/show_bug.cgi?id=737009
Restricting the number of children to be less than 4095 can
be an issue when generating types. This is also an issue for
the Lua bindings as each Lua state will create a new GType each
time the Lua code is executed.
https://bugzilla.gnome.org/show_bug.cgi?id=747882
I searched all files that mention g_test_run, and replaced most
g_print() calls. This avoids interfering with TAP. Exceptions:
* gio/tests/network-monitor: a manual mode that is run by
"./network-monitor --watch" is unaffected
* glib/gtester.c: not a test
* glib/gtestutils.c: not a test
* glib/tests/logging.c: specifically exercising g_print()
* glib/tests/markup-parse.c: a manual mode that is run by
"./markup-parse --cdata-as-text" is unaffected
* glib/tests/testing.c: specifically exercising capture of stdout
in subprocesses
* glib/tests/utils.c: captures a subprocess's stdout
* glib/tests/testglib.c: exercises an assertion failure in g_print()
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=725981
Reviewed-by: Colin Walters <walters@verbum.org>
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
GClosure has been in the "allocate area before the pointer" game since
before we did this with GTypeInstance. At the time that this was done
for GClosure, we didn't have valgrind.h in GLib.
Now that we do, we should add similar valgrind hints as the ones we did
for GTypeInstance. This substantially reduces reports of "possibly
lost" on pretty much any program that makes use of signals.
https://bugzilla.gnome.org/show_bug.cgi?id=739850
It’s quite common to see a g_param_spec_pointer() used for GObject or
boxed types which, while not incorrect, does make memory management
unsafe, since no copying or reference counting can be performed
automatically.
Similarly, people often use g_param_spec_boolean() when an enum would be
more appropriate, cf.
http://blog.ometer.com/2011/01/20/boolean-parameters-are-wrong/
Using enums also means that the set of allowable values can be extended
in future if needed.
In the hope that people who write code like that read the documentation,
mention the more specific types in the documentation.
https://bugzilla.gnome.org/show_bug.cgi?id=741779
This is pure read-only access to an external struct
so void warnings for people calling it from const
contexts such as accessors
https://bugzilla.gnome.org/show_bug.cgi?id=745068
Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
switching to the old macros boilerplate to G_DECLARE_*
a lot of warnings start to pop when *_IS_A_* or such are
called from a const context.
Fix this by taking const pointers as parameters
https://bugzilla.gnome.org/show_bug.cgi?id=745068
Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
This would allow bindings to use _get_option_group() functions, which
would then allow them to use GOption parsing.
This also adds introspection annotations to
g_option_context_add_group(), g_option_context_set_main_group() and
g_option_context_get_main_group().
https://bugzilla.gnome.org/show_bug.cgi?id=743349
Document each of the baked-in CClosure marshallers that we have in
gobject, along with their #GVaClosureMarshal equivalents.
Based on a patch from Xavier Claessens <xavier.claessens@collabora.com>.
Use the (private) _GLIB_DEFINE_AUTOPTR_CHAINUP macro for
G_DECLARE_DERIVABLE_TYPE and G_DECLARE_FINAL_TYPE so that we will
attempt to typedef and define items necessary for GCC
__attribute__((cleanup)) on, well, GCC only.
This fixes the build on non-GCC.
https://bugzilla.gnome.org/show_bug.cgi?id=743640
Automatically add support for the new cleanup macros to the type
declaration macros.
This is an API break because now your parent class needs to support
cleanup if you want to use G_DECLARE_*_TYPE. These macros are only 1
day old, however, so that's probably not a big problem (and we are
already busy adding the macros all over GLib and Gtk+).
https://bugzilla.gnome.org/show_bug.cgi?id=743640
Add G_DECLARE_DERIVABLE_TYPE() and G_DECLARE_FINAL_TYPE() to allow
skipping almost all of the typical GObject boilerplate code.
These macros make some assumptions about GObject best practice that mean
that they may not be usable with older classes that have to preserve
API/ABI compatibility with a time before these practices existed.
https://bugzilla.gnome.org/show_bug.cgi?id=389585
Using G_STRLOC ends up embedding unique strings of the form
__FILE__:__LINE__ in the compiled binary. We can avoid these
by passing __FILE__ and __LINE__ separately when constructing
the warning text.
This probably reduces the size of the binary as __FILE__ is
likely already contained as string otherwise.
Note that for GCC 2.x this changes behavior because G_STRLOC
also contained __PRETTY_FUNCTION__.
https://bugzilla.gnome.org/show_bug.cgi?id=741654
Along the same lines as g_clear_object(), g_set_object() is a
convenience function to update a GObject pointer, handling reference
counting transparently and correctly.
Specifically, it handles the case where a pointer is set to its current
value. If handled naïvely, that could result in the object instance
being finalised. In the following code, that happens when
(my_obj == new_value) and the object has a single reference:
g_clear_object (&my_obj);
my_obj = g_object_ref (new_value);
It also simplifies boilerplate code such as set_property()
implementations, which are otherwise long and boring.
Test cases included.
https://bugzilla.gnome.org/show_bug.cgi?id=741589
Add GOBJECT_DEBUG=instance-count which enables internal accounting
of the number of instances of each GType, and g_type_get_instance_count()
to retrieve the result.
https://bugzilla.gnome.org/show_bug.cgi?id=354457
