A similar situation to what is described in commit e48ac63d54 also
happens with signal callbacks: some signals are passed a native object
that is wrapped in an IDisposable managed object, which is then passed
as an argument to the signal handler. We need to dispose those objects
when the signal handler is done.
Those parameters will now be disposed in a finally {...} block, after
the signal handler has returned. This means that handlers should not
keep a reference to such a parameter, as it will be disposed right after
they return.
This change only affects the Cairo.Context parameter of the Widget.Drawn
signal, but it was badly needed, as shown by the Pixbuf demo in the
GtkDemo sample, which was leaking tens of MBs of memory.
Some virtual methods are passed a native object that is wrapped in an
IDisposable managed object, which is then passed on to the managed
overrides. We need to dispose those objects as soon as possible,
otherwise their native counterpart will not be freed until the next
garbage collection. Requiring the overrides to dispose them would be
cumbersome and error-prone.
Those parameters will now be disposed in a finally {...} block, after
the virtual method has returned. This means that overrides should not
keep a reference to such a parameter outside of the scope of the method,
as it will be diposed when the method returns.
This change only affects Cairo.Context parameter for now, but it was
particularly needed for them, as they could happily hold on to tens of
MBs of memory until the next garbage collection.
There are two elements repeated in this expression:
(( ((A) || (B)) || (B)) && C)
We can simplify "(A || B) || B" to simply "A || B",
so the result is a bit more readable this way:
(A || B) && C
There is no null check after these casts so if they fail they would
generate a NullReferenceException. By changing them to static casts
we would get a InvalidCastException which are much less misleading.
In the same way all GLib.Object-derived classes provided by the
generator have a GType static property (i.e. Gtk.Widget), we need
the same for the *Adapter classes, to access their GType without having
an instance of it. (The first use case would be GStreamerSharp's
Gst.Bin.IterateAllByInterface ().)
For this, we cannot simply add the property to all adapter classes
and be done, because it would clash with a property which is already
there, but is non-static, that has the same name and same value
(this property is needed for complying GInterfaceAdapter abstract
class), so we rename this property to GInterfaceGType because
using this name for the static one would not be consistent with the
rest of the classes generated which already provide the static one
with the name "GType".
This "Implementor" suffix was refactored recently (in commit
6cb03440c1) to be accessed via the ImplementorName property. So we
eliminate now the last occurrence of it in hardcoded form.
The parser will be going away at some point in the future, but we
will still need the fixup step. And the fixup step is really more
of a preliminary step for the generator anyway.
Made NativeStructGen more consistent with the way Gdk.Event
and Pango.Attribute are handled. Also increases performance
because reflection is not needed anymore to marshal these
kind of structs.
Don't spam the log with these messages for private structs
(and don't count this in the statistics), as there are too
many. These kind of types are just empty structs marked as
hidden and private.
GSource type was already there (but was not mapped by
the generator yet) so then the autogenerated methods
have been added manually inside the class after the
custom methods.
Other Source-related class are also generated and added
(but not mapped in the SymbolTable) to glib.
Add GDate and GDateTime classes to glib, and map
them in the generator's SymbolTable.
(The types TimeZone and TimeVal are also added because
the Date* types depend on them, but there is no need
to map them in the generator.)
Also move the TODOs of other auto-generated classes
to a single TODO in the Makefile
The pointer from native is stored inside of a class which
wraps the structure. Fields can be accessed by marshalling
from and to the pointer. glib: Value.Update does now invoke
a private Update() method which is needed to update the new
structures.
