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
When the 'conditional' parameter is TRUE, the queue will only be frozen
(ie: have its freeze count increase by one) if it is already frozen.
This will allow us to avoid a freeze-notify-thaw in the case that we
just want to notify on a single property.
Another approach may have been to add an is_frozen() type call and avoid
even increasing the freeze count at all in this case. Unfortunately,
I'm not totally sure what is the exact expected semantics of
simultaneous notifications in multiple threads and this may interact
badly with someone freezing or thawing in between our check and
emission.
Lift the check-if-READABLE and redirect-target logic from out of
g_object_notify_queue_add() into its own function, get_notify_pspec().
Use that function at the site of our two calls to
g_object_notify_queue_add().
This was done as a separate file before, and #include brought it into
gobject.c. That's a bit mad, so stop doing that.
Unfortunately, the insanity steps up a level: gobjectnotifyqueue.c is
installed in the public include dir, so we can't just get rid of it
entirely.
Similar to G_PARAM_DEPRECATED. It will warn only for users of the
signals, so a signal can still be emited without warning, for
compatibility reasons.
Apparently, there is no way user flags could have been used before,
so that shouldn't break anyone.
https://bugzilla.gnome.org/show_bug.cgi?id=663581
Instead of:
warning: ‘g_variant_get_gtype’ is deprecated (declared at ../../gobject/glib-types.h:242): Use '((GType) ((21) << (2)))' instead [-Wdeprecated-declarations]
show:
warning: ‘g_variant_get_gtype’ is deprecated (declared at ../../gobject/glib-types.h:242): Use ''G_VARIANT_GET_TYPE'' instead [-Wdeprecated-declarations]
Also, document the macro-expansion problem in the
G_GNUC_DEPRECATED_FOR docs
Allow passing --identifier-prefix and --symbol-prefix to glib-mkenums,
with the same meanings as in g-ir-scanner, to allow fixing up the enum
name parsing globally rather than needing to add a /<* *>/ override to
each enum.
https://bugzilla.gnome.org/show_bug.cgi?id=661797
This was used as an optimisation for the macro hackery that used to live
in gthread.h. If a particular library or program knew that it could
rely on thread support being enabled, it would allow for static
evaluation of conditionals in some of those macros.
Since the macros are dead and thread support is now always-on, we can
get rid of this bit of legacy.
And remove the 'joinable' argument from g_thread_new() and
g_thread_new_full().
Change the wording in the docs. Clarify expectations for
(deprecated) g_thread_create().
enums are stored in v_long but need to be marshalled as signed
integers. On platforms where int is 32 bits, taking the
address of v_long resulted in the wrong 32 bits being marshalled.
So we need to stuff the enum's int-sized value to a temporary
int-sized variable and marshall that instead.
Second, on return, libffi actually returns a pointer to a value
that's sized according to platform conventions, not according to
what the caller requested. ie if ffi_type_sint was requested, the
value can still be a 64-bit sign-extended long on a 64-bit
architecture like PPC64, thus the caller cannot simply cast
the return value as a pointer to the desired type, but must cast
as a pointer to an integral type and then cast to the desired
type to remove any sign extension complications.
For more information on how to correctly handle libffi return
values, see the following bug, specifically comment 35:
https://bugzilla.redhat.com/show_bug.cgi?id=736489
"For 64-bit ABIs that extend integral returns types to 64-bits, libffi always
returns full 64-bit values that you can truncate in the calling code. It's
just the way it is has always been. Please don't change libffi. I'll document
this clearly for the next version (perhaps there is a mention of this, I
haven't looked yet).
The same is true for returning 8-bit values, for instance, on 32-bit systems.
All ABIs extend those results to the full 32-bits so you need to provide a
properly aligned buffer that's big enough to hold the result."
https://bugzilla.gnome.org/show_bug.cgi?id=659881
These were the last users of the dynamic allocation API.
Keep the uses in glib/tests/mutex.c since this is actually meant to test
the API (which has to continue working, even if it is deprecated).
https://bugzilla.gnome.org/show_bug.cgi?id=660739
It's impossible to check this if the library user is using
g_type_register_static, but in that case their compiler should hopefully
warn about the truncation. This fixes it for G_DEFINE_TYPE and friends,
at least.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=659916
Signed-off-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Reviewed-by: Colin Walters <walters@verbum.org>
All locks are now zero-initialised, so we can drop the G_*_INIT macros
for them.
Adjust various users around GLib accordingly and change the docs.
https://bugzilla.gnome.org/show_bug.cgi?id=659866
The documentation for G_TYPE_CHAR says:
"The type designated by G_TYPE_CHAR is unconditionally an 8-bit signed
integer."
However the return value for g_value_get_char() was just "char" which
in C has an unspecified signedness; on e.g. x86 it's signed (which
matches the GType), but on e.g. PowerPC or ARM, it's not.
We can't break the old API, so we need to suck it up and add new API.
Port most internal users, but keep some tests of the old API too.
https://bugzilla.gnome.org/show_bug.cgi?id=659870
G_THREADS_ENABLED still exists, but is always defined. It is still
possible to use libglib without threads, but gobject (and everything
above it) is now guaranteed to be using threads (as, in fact, it was
before, since it was accidentally impossible to compile with
--disable-threads).
https://bugzilla.gnome.org/show_bug.cgi?id=616754
Some links were broken due to typos, because functionality was removed
in GLib 2.0 or for various other reasons. Fix up as many of them as is
reasonable.
The implementation of GValue is not public or documented. When
allocated on the stack, initializing a GValue is usually done as
documented with:
GValue value = { 0, };
There is lot code around (including WebKit) that added all the missing
fields, resulting in this ugly and non-obvious:
GValue value = { 0, { { 0 } } };
However, this doesn't play nice with -Wmissing-field-initializers for
example. Thus, G_VALUE_INIT.
http://bugzilla.gnome.org/show_bug.cgi?id=654793http://bugzilla.gnome.org/show_bug.cgi?id=577231
In an attempt to avoid some potential future abuses of the GParamSpec
API, qualify the 'name' field of the structure as 'const' and add a
comment noting that it is an interned string.
This is a theoretical API break, but it will only ever result in
warnings -- and even then, only if you were already doing something
questionable.
Clean up some of the warnings that were caused internally in gparam.c
from these changes.
This function implements the following logic:
if (g_variant_is_floating (value))
g_variant_ref_sink (value);
which is used for consuming the return value of callbacks that may or
may not return floating references.
This patch also replaces a few instances of the above code with the new
function (GSettings, GDBus) and lifts a long-standing restriction on the
use of floating values as the return value for signal handlers by
improving g_value_take_variant().
https://bugzilla.gnome.org/show_bug.cgi?id=627974
The -e parameter to echo isn't recognized by echo in POSIX sh,
but isn't needed when no escaped characters need to be
interpreted.
This fixes building glib with a mingw cross compiler on Mac OS X.
https://bugzilla.gnome.org/show_bug.cgi?id=654085
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
Rather than having the gtk-doc build machinery have a list of header
files to exclude, change the GLib build to dump a list of public
header files generated from the maintained Makefile.am files for
each of glib/, gobject/, gio/.
Also, for glib, always install glib-unix.h, even on non-Unix
platforms, for the same reason we install gwin32.h even on Unix.
https://bugzilla.gnome.org/show_bug.cgi?id=651745
The check for _MSC_VER here is not necessary here because:
-One cannot compile GLib out-of-the-box with VS 2003 (let alone VS6
or earlier) since GLib 2.22.4 or so.
-This code compiles fine with the currently-supported VS versions
(2008/2010) without the error mentioned in the comments.
This will close Bug 652002.
Based on a patch by Giovanni Campagna <gcampagna@src.gnome.org>
From discussion, GVariantIter is not useful for bindings, but
GVariantBuilder may be.
https://bugzilla.gnome.org/show_bug.cgi?id=646635
- remove all inline assembly versions
- implement the atomic operations using either GCC intrinsics, the
Windows interlocked API or a mutex-based fallback
- drop gatomic-gcc.c since these are now defined in the header file.
Adjust Makefile.am accordingly.
- expand the set of operations: support 'get', 'set', 'compare and
exchange', 'add', 'or', and 'xor' for both integers and pointers
- deprecate g_atomic_int_exchange_and_add since g_atomic_int_add (as
with all the new arithmetic operations) now returns the prior value
- unify the use of macros: all functions are now wrapped in macros that
perform the proper casts and checks
- remove G_GNUC_MAY_ALIAS use; it was never required for the integer
operations (since casting between pointers that only vary in
signedness of the target is explicitly permitted) and we avoid the
need for the pointer operations by using simple 'void *' instead of
'gpointer *' (which caused the 'type-punned pointer' warning)
- provide function implementations of g_atomic_int_inc and
g_atomic_int_dec_and_test: these were strictly macros before
- improve the documentation to make it very clear exactly which types
of pointers these operations may be used with
- remove a few uses of the now-deprecated g_atomic_int_exchange_and_add
- drop initialisation of gatomic from gthread (by using a GStaticMutex
instead of a GMutex)
- update glib.symbols and documentation sections files
Closes#650823 and #650935
The grouping in files/headers is not used anymore, and
the function attributes neither. Adapt abicheck scripts
and .def file generation rules accordingly.
The hash table used exclusively for looking up types by name used to map
quarks => types. But we can easily make it map strings => types, which
avoids the quark lookup. And that in trun avoids taking a lock and
consulting another hash table. So this change should make
g_type_from_name() roughly twice as fast.
In some cases, signal arguments have to be collected, even if there are i
no signal handlers connected (e.g. for GVariant parameters, where collection
consumes a floating variant).
Based on a patch by Christian Persch.
Bug #643624.
These are the updates to the autotools files to
ensure the expansion of the GIO, GLib and GObject
project files (*.vcxproj, *.vcxproj.filters) and to
enable the distribution of the VS2010 project files
The actual VS2010 project files will follow shortly
I couldn't tell from reading the documentation whether I had to pass in
an uninitialized value, or a value initialized to the exact type, or
something else. It turns out (from reading the source) that you have to
pass in an initialized value, but you can use any type to which the
property's actual type can be transformed.
So, let's document this.
The code section guarded with toggle_refs_mutex includes a call to
g_object_unref(), which may call toggle_refs_notify(). As the latter
tries to acquire the same mutex, glib locks up.
https://bugzilla.gnome.org/show_bug.cgi?id=632884
Previously, dumping a GValue holding a GStrv just yielded "((GStrv *)
0xDEADBEEF)". I think it'd be more useful to dump a Python list-style
representation of the GStrv's contents, if it's not NULL.
Fixes: <https://bugzilla.gnome.org/show_bug.cgi?id=629192>
Since we added g_object_notify_by_pspec(), an efficient way to install
and notify properties relies on storing the GParamSpec pointers inside
a static arrays, like we do for signal identifiers.
Instead of multiple calls to g_object_class_install_property(), we
should have a single function to take the static array of GParamSpecs
and iterate it.
https://bugzilla.gnome.org/show_bug.cgi?id=626919
Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
This should fix bug #628952.
Don't include glib/gdatasetprivate.h directly. Especially don't define
GLIB_COMPILATION when doing that, as that causes breakage on Windows
because of the variable dllimport/dllexport stuff in gtypes.h that
checks GLIB_COMPILATION. That macro really should be defined only when
compiling code that goes into the libglib DLL. Otherwise the compiler
thinks that variables that should be imported from libglib are
actually defined in the code being compiled.
Just call g_atomic_pointer_get() as such, don't bother with
G_DATALIST_GET_FLAGS.
Signed-off-by: Tor Lillqvist <tml@iki.fi>
The gdatasetprivate.h header includes gatomic.h directly. It all works
well in GLib, but inside GObject it will trigger the single inclusion
guard.
Since this is a private header, and it's kind of a special case, one way
to fix it is to declare GLIB_COMPILATION around it and fool the single
inclusion guard in gatomic.h into thinking we're compiling GLib and not
GObject.
g_object_class_list_properties tries to sort the returned list of
paramspecs by 'type depth' and param_id. But all the overridden
interface properties have a param_id of 0, so they come out in
a random order.
Bug 628253.
The previous code dedup'd when thawing and threw nasty warnings your way
if you notified too often. This can now easily be avoided.
Performance should be roughly identical, as both are O(n²).
The g_object_bind_property_with_closures() function should set a
marshaller if the two GClosures don't have one already. This simplifies
the caller code and avoids duplication.
We need to add a new marshaller to the gmarshal.list matching the
signature of the GBindingTransformFunc function.
Since GSettings got the same functionality and flag in commit ca3b7b75b
GBinding should also have the ability to automatically invert a boolean
value without requiring a custom transformation function.
Since using the function pointer version muddles the memory management
requirements of language bindings, we should implement a GClosure-based
variant on top of g_object_bind_property_full().
https://bugzilla.gnome.org/show_bug.cgi?id=622278
This reverts commit 0201a81f04 and adds
locks in the right place.
As this file is a public header (see last commit), we cannot just remove
functions from it.
gobjectnotifyqueue.c is a public header, so we cannot remove files from
it. (Yes you read that right, this .c file is a public header. See your
installation directory.)
Adds locking around object property change notification handling. The
notifications are only emitted after all threads have called
g_object_thaw_notify().
https://bugzilla.gnome.org/show_bug.cgi?id=166020
You can pass a NULL GValue * to any of g_value_array_insert, _prepend or
_append to add a new, uninitialized value. This is a very useful
shortcut, and it should be documented rather than left languishing in a
comment in the implementation.
Fixes Gnome bug #552363.
When creating a binding between two object properties we might want to
automatically synchronize the two values at the moment of the binding
creation, instead of waiting for the next change.
The G_BINDING_SYNC_CREATE flag does exactly what it says on the tin.
https://bugzilla.gnome.org/show_bug.cgi?id=622281
This is a minimal patch-out of the galias functionality. We will do a
release like this so that we can easily back it out if there are
reported problems.
A more substantial cleanup (mostly removing #includes from every file)
will follow if there are no issues.
Since an object instance might have a lot of bindings, using a list
might become a performance issue when removing them. Using a simple
hash table guarantees constant time lookup, which is the most common
operation.
GBinding is a simple, opaque object that represents a binding between a
property on a GObject instance (source) and property on another GObject
instance (target).
https://bugzilla.gnome.org/show_bug.cgi?id=348080
g_object_notify_by_pspec() will emit the "notify" signal on the given
pspec, short-circuiting the hash table lookup needed by
g_object_notify(). The suggested and documented way of using
g_object_notify_by_pspec() is similar to the way of emitting signals
with their ID.
Emission tests (with no handler attached to the notify signal) show a
10-15% speedup over using g_object_notify().
https://bugzilla.gnome.org/show_bug.cgi?id=615425
This adds static markers and systemtap tapsets for:
* type creation
* object lifetimes (creation, ref, unref, dispose, finalize)
* signal creation and emission
Signal emissions and finalization marker have a corresponding
*_end (or *-end in dtrace) version that is when the corresponding
operation is finished.
https://bugzilla.gnome.org/show_bug.cgi?id=606044
Add a @valuenum@ substitution that outputs the integer value of a
particular enum value. The value is determined by using (sandboxed)
perl to evaluate C expression. If evaluation fails then glib-mkenums
dies loudly. Evaluation is only enabled if '@valuenum@' appears in the
template file, so existing users will not be affected.
Currently, specifying a comment template in the template file results in
the given template being appended to the default (C-style) one rather
than replacing it.
This causes it to be replaced outright.
Bug 617940.
Don't keep the lists of source files for libglib, libgobject and
libgio in the VS project files in addition to the canonical location,
the corresponding Makefile.am files.
Instead, generate the corresponding .vcproj files at make dist time
using the C preprocessor, from template files called .vcprojin. We
still list explicitly in the .vcprojin files some of the
Windows-specific source files, and the sources files of gnulib and
pcre.
This adds the two new functions g_type_add_class_private()
and g_type_class_get_private() and a convenience macro
for the getter G_TYPE_CLASS_GET_PRIVATE().
Appease the MS C++ compiler by using _val instead of __value as a variable
name in G_VALUE_COLLECT_INIT.
Problem found by Haakon Sporsheim <haakon.sporsheim@gmail.com>.
Re-closes: bgo#608602
This way we don't need to keep a custom array that we bsearch on (and
that isn't threadsafe) but can use the gtype.c machinery that is
threadsafe. And fast, too!
https://bugzilla.gnome.org/show_bug.cgi?id=554887
This eases cleaning up these functions.
One optimization in value_set_internal() was lost in the process. It
shouldn't cause too many issues when all is said and done.
https://bugzilla.gnome.org/show_bug.cgi?id=554887
It makes the IBM XL C Compiler (the 'native' non-free compiler
on the AIX 5.3 and 6.1 platform) stop compiling with syntax error.
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=581300
Signed-off-by: Javier Jardón <jjardon@gnome.org>
The reason we need to enforce this is that the GTypeValueTable
documentation explicitly states that memory is memset to 0 when the
value_init function is called.
https://bugzilla.gnome.org/show_bug.cgi?id=603590
Makes g_signal_emit_valist from 15% to 20% faster.
Results reported from profiling the pan newsreader which uses a variant
of simple and complex signal emissions (i.e no args or various args)
https://bugzilla.gnome.org/show_bug.cgi?id=603590
Most callers of G_VALUE_COLLECT previously had to initialize the GValue
and then G_VALUE_COLLECT would still go through a cleanup phase.
The new variant allows passing a unitialized GValue along with a GType
and speedup the initialization/collection process.
https://bugzilla.gnome.org/show_bug.cgi?id=603590
If threads are available we always enable threads in gobject, which
means all gio/gobject code can enable the unconditional thread calls.
This is a minor optimization since we avoid a bunch of unnecessary
is-threads-enabled checks.
https://bugzilla.gnome.org/show_bug.cgi?id=606775
This works around the need to take a custom mutex twice and add the
object to a GSList of objects that are currently in construction for the
common case. Only when the constructor is overwritten do we use the
previous behavior and allow things like singleton objects.
The only slightly incompatible change is that previously, it was ok to
call g_object_set() on construct-only properties while the object was
initialized. This will now fail. If that behavior is needed, setting a
custom constructor that just chains up will reenable this functionality.
https://bugzilla.gnome.org/show_bug.cgi?id=557151
g_type_default_interface_peek() and g_type_value_table_peek() don't need
to acquire read locks anymore when they test the refcount instead of
node->data.
The function returns TRUE if the type was previously initialized and can
be easily reused. It returns FALSE and does not take a reference if the
type is not referenced yet.
g_type_class_ref() uses this to avoid taking locks in the common path,
which speeds up object creation a lot - in particular in multithreaded
applications.
https://bugzilla.gnome.org/show_bug.cgi?id=585375
This does not change any locking behavior at all, it just replaces
simple getters/setters of the variable with atomic versions.
The ref_count variable was kept as unsigned, even though that requires
casting for all operations, to mirror GObject->refcount.
https://bugzilla.gnome.org/show_bug.cgi?id=585375
Currently interface lookups are do a binary search over all the interfaces
an object implements. Its possible to do this lookup in constant time using for
instance the gcj algorighm described at:
http://gcc.gnu.org/ml/java/1999-q3/msg00377.html
This is an implementation of that based on GAtomicArray.
We implement lock free interface lookup by moving the n_ifaces
counter into memory pointed to by TypeNode->iface_entries, and
then updating this in RCU-style by always copying it, modifying
the copy and then when the modification is done replace the old
pointer with g_atomic_pointer_set.
There is one additional complexity when freeing the old memory,
since the old memory region can be in use. To handle this we
don't free such memory, but put it on a free list and reuse it
later. This means that lock-free lookups must be able to
handle the memory being modified in random ways without crashing,
and at the end we verify that the memory didn't change and the
transaction is ok.
With this infrastructure the patch then implements a lock-free
version of type_lookup_iface_entry_L called type_lookup_iface_vtable_I
and use it in: g_type_interface_peek, g_type_interface_peek_parent
and type_node_check_conformities_UorL.
Using the performance tests from bug 557100 shows that the general
performance difference is negligible, but the lack of a lock for each
type check and interface vfunc call should greatly enhance threaded
scalability.
This adds supports for a lock-less a non-shrinking growable array.
You can use it to do reads using no locks, as long as your read-code
can handle that during the read transaction the object can be modified
by another writer (but it will not change size or be freed), and you
can only trust the result once the transaction has finished successfully.
This doesn't free things like RCU normally does, instead it pushes the
memory on a free list that is reused for other atomic arrays.
The n_children variable can be written when locked, while the n_supers
variable is read at any time. As they both share the same bytes,
accessing them is not threadsafe.
This patch puts them into different bytes.
Thanks to Xan Lopez and valgrind for noticing this.
Store whether the object has a toggleref before decrementing the
refcount to prevent race condition when two threads simultaneously
try to unref an object with a refcount of 2.
Patch by Antoine Tremblay.
https://bugzilla.gnome.org/show_bug.cgi?id=551706
This avoids a bunch of code and makes construction of simple objects
faster.
Object construction performance improvement:
Non-Threaded Threaded
Simple: 14% 5%
Complex: -1.1% -2.2%
Other tests stable.
https://bugzilla.gnome.org/show_bug.cgi?id=557100
If the class has no properties there could be no notification anyway.
This is an important optimization for construction of simple objects.
Object construction performance improvement:
Non-Threaded Threaded
Simple: 84% 91%
Complex: -1.4% -0.6%
Other tests stable.
https://bugzilla.gnome.org/show_bug.cgi?id=557100
This is both cleaner and faster (it avoids function calls and
zeroing the memory twice).
Object construction performance improvement:
Non-Threaded Threaded
Simple: 11% 1.3%
Complex: 8% 6%
Other tests stable.
https://bugzilla.gnome.org/show_bug.cgi?id=557100
Commit 789e260638 tried to add support for -?, but there is a typo
and instead -h was added when already present instead of -? for one
of the cases.
It works without this corrections, because all unrecognized options
trigger usage showing as well, but this is more correct.
This was bug 556706 originally.
Tools like clang fail to recognize that stanzas like
g_return_if_fail (GTK_IS_FOO (w)) guarantee w != NULL. By minimally
rewriting the type-checking macros, we can avoid these false positives.
Since @filename@ contains the full filename as given to the glib-mkenum
command, possibly including path elements (e.g. when using a non-srcdir
build), it is unsuitable to use in a #include statement in the generated
file if one wants to distribute it. This patch adds @basename@ which
expands to the base name of the input filename. Bug #587307.
Update various README files to refer to git instead of svn.
Add a README.commits that is pretty much a copy of the same file
in GTK+. Also discontinue ChangeLog files.
2009-03-13 Kristian Rietveld <kris@imendio.com>
* gsignal.c (signal_lookup_closure): when defaulting to the only
item in the array, check if this is indeed the default closure.
(patch by Tim Janik).
svn path=/trunk/; revision=7979
GLib users buildable with gcc 4.4. Patch by Jakub Jelinek.
* glib/gatomic.[hc]: Add G_GNUC_MAY_ALIAS to pointer arguments,
fix macro versions to only operate on objects of the same size.
* glib/gdataset.c:
* glib/gthread.[hc]:
* glib/gdatasetprivate.h: Remove unnecessary casts in
g_atomic_pointer_get calls.
svn path=/trunk/; revision=7875
* configure.in: Define an ENABLE_REGEX macro
* gobject/gboxed.c: Don't refer to g_regex_ref if ENABLE_REGEX
is not defined.
svn path=/trunk/; revision=7815
2009-01-02 Behdad Esfahbod <behdad@gnome.org>
Bug 565136 – Gobject's "notify" signal parameters are wrong in gtk-doc
Patch from Andrzej Zaborowski
* gobject.c (g_object_do_class_init): Fix param order in docs.
svn path=/trunk/; revision=7759
* gtypemodule.c (g_type_module_use): Always reset the use count
to its previous value before returning FALSE. Pointed out by
Johan Billien.
svn path=/trunk/; revision=7725
