Modify gsignal to automatically disconnect a GClosure that becomes
invalid (in the g_closure_invalidate() sense).
Previously, when g_signal_connect_object() was used with a GObject as
the user_data and that object was destroyed, the handler would no longer
be called but the signal handler was itself was not disconnected (ie:
the bookkeeping data was kept around).
The main effect of this patch is that these signal handlers will now
be automatically disconnected (and fully freed).
The documentation for g_signal_connect_object() has anticipated this
change for over 10 years and has advised the following workaround when
disconnecting signal handlers connected with g_signal_connect_object():
if (g_signal_handler_is_connected (instance, id))
g_signal_handler_disconnect (instance, id);
If your code follows this practice then it will continue to work.
If your code never disconnects the signal handler then it was wasting
memory before (and this commit fixes that).
If your code unconditionally disconnects the signal handler then you
will start to see (harmless) g_critical() warnings about this and you
should fix them.
https://bugzilla.gnome.org/show_bug.cgi?id=118536
Because it now handles EINTR. And we should do so. While most people
use Linux, which tries very hard to avoid propagating EINTR back up
into userspace, it can still happen.
https://bugzilla.gnome.org/show_bug.cgi?id=682833
This avoids warnings when creating idiomatic value tables, like:
static const GTypeValueTable _clutter_shader_float_value_table = {
clutter_value_init_shader_float,
clutter_value_free_shader_float,
clutter_value_copy_shader_float,
clutter_value_peek_pointer,
"ip",
clutter_value_collect_shader_float,
"pp",
clutter_value_lcopy_shader_float
};
Because the strings are literals. And, really: nobody should be using
allocated values for the collection and lcopy strings.
https://bugzilla.gnome.org/show_bug.cgi?id=671545
The current note makes it look like the marshaller code generation has
been deprecated in favour of the libffi-based generic marshaller; this
is not the case, so we should probably clarify the point a bit.
https://bugzilla.gnome.org/show_bug.cgi?id=677235
Otherwise we crash with a null-ptr deref in g_object_newv and ever there we
should not return null, as we're saying that object creation will not return
null.
Expand the documentation for g_object_[freeze|thaw]_notify() to explain that
it deduplicates “notify” signals emitted by frozen objects, so that at most
one signal is emitted per property.
https://bugzilla.gnome.org/show_bug.cgi?id=676937
I didn't do this comprehensively, since there's a lot of it, mainly
due to the GDBus object manager stuff, but anyone trying to use
that would fail fast due to lack of the gdbus code generator.
My main goal was to get API additions to existing classes like
g_data_input_stream_read_line_utf8(), as well as the lower level new
API like glib-unix.h.
https://bugzilla.gnome.org/show_bug.cgi?id=676816
Commit f084b60377 incorrectly set
DIST_SUBDIRS for the toplevel Makefile.am. In general actually we
don't need to set it, because modern automake automatically sets
it by looking at conditionals for SUBDIRS.
Tested-by: Rico Tzschichholz <ricotz@t-online.de>
https://bugzilla.gnome.org/show_bug.cgi?id=667806
This patch solves two problems:
First, it allows builders to optionally cut the circular dependency
between dbus and glib by disabling the modular tests (just like how
the tests can be disabled in dbus).
Second, the tests are entirely pointless to build if cross-compiling.
It also moves us slightly closer to the long term future we want where
the tests are a separate ./configure invocation and run against the
INSTALLED glib, not the one in the source tree. This would allow us to
run the tests constantly, not just when glib is built.
https://bugzilla.gnome.org/show_bug.cgi?id=667806
When building with MinGW/MSYS with srcdir != builddir the build fails:
- to locate the generated .def files
- creating libglib-gdb.py
- creating libgobject-gdb.py
Solved this by explicitly instructing these files to be generated
in $(builddir)/...
https://bugzilla.gnome.org/show_bug.cgi?id=653167
If the optimization is used for only having one closure handling a
signal emission, then hooks will not be run, so it should be disabled
when an emission hook is added.
https://bugzilla.gnome.org/show_bug.cgi?id=671918
The trace of the signal emission of the was calculating the instance
type after the instance was unrefed. Fix this by keeping the instance type around.
The ability to cross-compile glib got broken after the
merge of the 'signal-performance' branch as the assumption
was made that the generated glib-genmarshal can be executed
on the host (which isn't valid when cross-compiling).
Fixed this by using the just-built glib-genmarshal for normal
compilations and the native (host) glib-genmarshal when doing a
cross-compilation as was also done in several other areas of GLib
Tested for host=x86_64-unknown-linux-gnu, target=x86_64-unknown-linux-gnu
and host=x86_64-unknown-linux-gnu, target=i686-w64-mingw32
https://bugzilla.gnome.org/show_bug.cgi?id=671676
In the code generation portion, va_copy() is not universally available,
so use the existing G_VA_COPY macro that in turn calls va_copy() if it
is available or call an appropriate emulation otherwise.
va_vopy() is not universally available in all compilers, so make use of
the existing G_VA_COPY macro which either calls va_copy() if it is
available, or emulates it if otherwise.
When there is only one closure handling a signal emission and
it doesn't have a bunch of complicated features enabled we
can short circuit the va_args collection into GValues and call the
callback via the va_marshaller directly.
https://bugzilla.gnome.org/show_bug.cgi?id=661140
If the signal argumment types matches a built in standard
marshaller we use the va_marshaller for that, and also the
normal marshaller if NULL was specified (as its faster than
the generic one).
This lets you set a va_marshaller on your signal which will be
propagated to all closures for the signal. Also, automatically
uses the generica va_marshaller if you specify a NULL c_marshaller.
https://bugzilla.gnome.org/show_bug.cgi?id=661140
This means we're not abusing the notifiers for meta_marshallres,
and we're able to later cleanly add other fields to GClosure.
We still have to leave the ABI intact for the GClosure->meta_marshal
bit, as old G_CLOSURE_N_NOTIFIERS macro instances still accesses it.
However, we always set it to zero to keep those macros working.
https://bugzilla.gnome.org/show_bug.cgi?id=661140
Transforming a GValue holding flags from a GFlagsValue set that includes the 0
value (no flag bits set) into a string would loop until exhausting all the
available memory.
https://bugzilla.gnome.org/show_bug.cgi?id=670557
Add new macros to disable -Wdeprecated-declarations around a piece of
code, using the C99 (and GNU89) _Pragma() operator. Replace the
existing use of #pragma for this in gio, and suppress the warnings in
gvaluearray.c as well.
https://bugzilla.gnome.org/show_bug.cgi?id=669671
Given
typedef enum MyFoo MyFoo;
glib-mkenums would get confused, not notice the ";", and then keep
skipping lines until it found one that started with a "{", possibly
even going into the next file.
Fix it to just ignore those lines instead (and also, to error out if
it hits eof while parsing an enum).
https://bugzilla.gnome.org/show_bug.cgi?id=669595
The GValueArray type was added in a time, during the Jurassic era or so,
when GArray did not have a representable GType. The GValueArray API has
various issues as well:
- it doesn't match the other GLib array types;
- it is not reference counted;
- the structure is fully exposed on the stack, so it cannot be
extended to add reference counting;
- it cannot be forcibly resized.
The nice thing is that now we have a GArray type that can replace in
full GValueArray, so we can deprecate the latter, and reduce the
complexity in GLib, application code, and bindings.
https://bugzilla.gnome.org/show_bug.cgi?id=667228
... and g_value_get_gtype(). G_TYPE_GTYPE is a pointer type, so it's
values should use the v_pointer member. This is especially true, because
the value collectors from varargs in gvaluecollector.h use that, too.
This should only cause issues when sizeof(glong) != sizeof(gpointer),
and I'm not aware of any such platform. Maybe win64?
Transparent access to a weak pointer from the thread performing the
weak -> strong conversion is incompatible with thread-safety: that
thread will have to do something special. This is GNOME#548954.
https://bugzilla.gnome.org/show_bug.cgi?id=548954
Some of the GLib tests deliberately provoke warnings (or even fatal
errors) in a forked child. Normally, this is fine, but under valgrind
it's somewhat undesirable. We do want to follow fork(), so we can check
for leaks in child processes that exit gracefully; but we don't want to
be told about "leaks" in processes that are crashing, because there'd
be no point in cleaning those up anyway.
https://bugzilla.gnome.org/show_bug.cgi?id=666116
We were previously preventing implementations of an interface from
specifying G_PARAM_CONSTRUCT for a property of that interface if the
interface didn't specify it itself (or was readonly).
This is something that should only interest the implementation, so we
remove this restriction.
This allows 6 new possible override scenarios:
- writable -> writable/construct
- writable -> readwrite/construct
- readwrite -> readwrite/construct
- writable/construct-only -> writable/construct
- writable/construct-only -> readwrite/construct
- readwrite/construct-only -> readwrite/construct
and we update the testcase to reflect this.
https://bugzilla.gnome.org/show_bug.cgi?id=666616
Add a testcase to check all possibilities for overriding a property
specified on an interface from an implementation of that interface,
changing the type and flags.
https://bugzilla.gnome.org/show_bug.cgi?id=666616
Change the order of the checks so that we hear about the 'biggest'
problem first. Also, stop reporting problems after we report the first
one for a particular property.
Add some comments.
https://bugzilla.gnome.org/show_bug.cgi?id=666616
The property override typecheck was meant to enforce the type on the
overriding property being exactly equal to the type on the interface
property. Instead, g_type_is_a() was incorrectly used.
We could try to enforce equality, but if a property is read-only then it
should be possible for the implementation to type the property with any
subtype of the type specified on the interface (because returning a more
specific type will still satisfy the interface). Likewise, if the
property is write-only then it should be possible for the implementation
to type the property with any supertype.
We implement the check this way.
https://bugzilla.gnome.org/show_bug.cgi?id=666616
Simplify some of the logic in this function.
1) Simplify flag checks as per Colin's suggestions in
https://bugzilla.gnome.org/show_bug.cgi?id=605667
2) Don't repeatedly recheck if class_pspec is NULL.
GObject enforces the following restrictions on property overrides:
- must only add abilities: if the parent class supports
readability/writability then the subclass must also support them.
Subclasses are free to add readability/writability.
- must not add additional restrictions: if the parent class doesn't
have construct/construct-only restrictions then the subclass must
not add them. Subclasses are free to remove restrictions.
The problem with the previous implementation is that the check against
adding construct/construct-only restrictions was being done even if the
property was not previously writable. As an example:
"readable" and "writable only on construct"
was considered as being more restrictive than
"read only".
This patch tweaks the check to allow the addition of
construct/construct-only restrictions for properties that were
previously read-only and are now being made writable.
https://bugzilla.gnome.org/show_bug.cgi?id=666615
First, some ARM systems are not fast enough to meet the 30 second
deadline in gwakeuptest.c, so increase that to 60.
Second, we have some signed/unsigned woes in the gparam transform tests.
These don't really matter, since it's test code, but they do obscure
real leaks in the library.
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=666115
Acked-by: Matthias Clasen <mclasen@redhat.com>
Either g_type_register_static_simple (used by G_DEFINE_TYPE_EXTENDED)
and G_IMPLEMENT_INTERFACE use automatic variables for GTypeInfo and
GInterfaceInfo structs, while tutorials and source code often use
static variables. This commit consistently adopts the former method.
https://bugzilla.gnome.org/show_bug.cgi?id=600161
* Represents an immutable reference counted block of memory.
* This is basically the internal glib GBuffer structure exposed,
renamed, and with some additional capabilities.
* The GBytes name comes from python3's immutable 'bytes' type
* GBytes can be safely used as keys in hash tables, and have
functions for doing so: g_bytes_hash, g_bytes_equal
* GByteArray is a mutable form of GBytes, and vice versa. There
are functions for converting from one to the other efficiently:
g_bytes_unref_to_array() and g_byte_array_free_to_bytes()
* Adds g_byte_array_new_take() to support above functions
https://bugzilla.gnome.org/show_bug.cgi?id=663291
