[PATCH wayland] server: add helper functions for wl_global

[Bryce Harrington]

On Mon, Feb 23, 2015 at 10:28:48AM -0600, Derek Foreman wrote:
> On 23/02/15 10:02 AM, Jonny Lamb wrote:
> > The intention here is to be able to find an existing wl_global using
> > some search parameters and then get some information about it.
> 
> I'm not sure I see a need for this, but if there is need there should
> also be documentation. :)

And a unit test case.  :-)
 
> > ---
> >  src/wayland-server.c | 33 +++++++++++++++++++++++++++++++++
> >  src/wayland-server.h |  4 ++++
> >  2 files changed, 37 insertions(+)
> > 
> > diff --git a/src/wayland-server.c b/src/wayland-server.c
> > index 0558634..5dd6c71 100644
> > --- a/src/wayland-server.c
> > +++ b/src/wayland-server.c
> > @@ -945,6 +945,39 @@ wl_global_destroy(struct wl_global *global)
> >  	free(global);
> >  }
> >  
> > +WL_EXPORT void *
> > +wl_global_get_data(struct wl_global *global)
> > +{
> > +	return global->data;
> > +}
> > +
> > +WL_EXPORT struct wl_global *
> > +wl_global_find(struct wl_display *display,
> > +	const struct wl_interface *interface, uint32_t version,
> > +	void *data, wl_global_bind_func_t bind)
> > +{
> > +	struct wl_global *global;
> > +
> > +	/* return with nothing if we have no search parameters */
> > +	if (interface == NULL && version == 0 && data == NULL && bind == NULL)
> > +		return NULL;
> > +
> > +	wl_list_for_each(global, &display->global_list, link) {
> > +		if (interface != NULL && global->interface != interface)
> > +			continue;
> > +		if (version != 0 && global->version != version)
> > +			continue;
> > +		if (data != NULL && global->data != data)
> > +			continue;
> > +		if (bind != NULL && global->bind != bind)
> > +			continue;
> > +
> > +		return global;
> > +	}
> > +
> > +	return NULL;
> > +}
> > +
> >  /** Get the current serial number
> >   *
> >   * \param display The display object
> > diff --git a/src/wayland-server.h b/src/wayland-server.h
> > index af2f03d..05449dc 100644
> > --- a/src/wayland-server.h
> > +++ b/src/wayland-server.h
> > @@ -113,6 +113,10 @@ struct wl_global *wl_global_create(struct wl_display *display,
> >  				   int version,
> >  				   void *data, wl_global_bind_func_t bind);
> >  void wl_global_destroy(struct wl_global *global);
> > +void *wl_global_get_data(struct wl_global *global);
> > +struct wl_global *wl_global_find(struct wl_display *display,
> > +	const struct wl_interface *interface, uint32_t version,
> > +	void *data, wl_global_bind_func_t bind);
> >  
> >  struct wl_client *wl_client_create(struct wl_display *display, int fd);
> >  void wl_client_destroy(struct wl_client *client);
> > 
> 
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