On 24.07.2017 17:07, Pekka Paalanen wrote: > From: Pekka Paalanen <[email protected]> > > A weston_output available to the compositor should always be either in > the list of pending outputs or the list of enabled outputs. Let > weston_compositor_add_output() and weston_compositor_remove_output() > handle the moves between the lists. > > This way weston_output_enable() does not need to remove and > oops-it-failed-add-it-back. weston_output_disable() does not need to > manually re-add the output back to the pending list. > > To make everything nicely symmetric and fix any unbalancing caused by > this: > - weston_output_destroy() explicitly wl_list_remove()s > - weston_compositor_add_pending_output() first removes then inserts, as > we have the assumption that the link is always valid, even if empty. > > Update the documentations, too. > > v2: > - talk about "list of enabled outputs" > - keep wl_list_remove in weston_compositor_remove_output in its old > place > > Signed-off-by: Pekka Paalanen <[email protected]>
Hi, Now, for real: Reviewed-by: Armin Krezović <[email protected]> Thanks, Armin > --- > libweston/compositor.c | 26 ++++++++++++++------------ > 1 file changed, 14 insertions(+), 12 deletions(-) > > diff --git a/libweston/compositor.c b/libweston/compositor.c > index 5d51e198..98813d7b 100644 > --- a/libweston/compositor.c > +++ b/libweston/compositor.c > @@ -4464,8 +4464,10 @@ weston_output_move(struct weston_output *output, int > x, int y) > } > } > > -/** Adds an output to the compositor's output list and > - * send the compositor's output_created signal. > +/** Signal that a pending output is taken into use. > + * > + * Removes the output from the pending list and adds it to the compositor's > + * list of enabled outputs. The output created signal is emitted. > * > * \param compositor The compositor instance. > * \param output The output to be added. > @@ -4476,7 +4478,9 @@ weston_compositor_add_output(struct weston_compositor > *compositor, > { > struct weston_view *view, *next; > > + wl_list_remove(&output->link); > wl_list_insert(compositor->output_list.prev, &output->link); > + > wl_signal_emit(&compositor->output_created_signal, output); > > wl_list_for_each_safe(view, next, &compositor->view_list, link) > @@ -4535,6 +4539,8 @@ weston_output_enable_undo(struct weston_output *output) > * - Compositor is notified that outputs were changed and > * applies the necessary changes to re-layout outputs. > * > + * - The output is put back in the pending outputs list. > + * > * - Signal is emitted to notify all users of the weston_output > * object that the output is being destroyed. > * > @@ -4558,7 +4564,9 @@ weston_compositor_remove_output(struct weston_output > *output) > weston_presentation_feedback_discard_list(&output->feedback_list); > > weston_compositor_reflow_outputs(compositor, output, output->width); > + > wl_list_remove(&output->link); > + wl_list_insert(compositor->pending_output_list.prev, &output->link); > > wl_signal_emit(&compositor->output_destroyed_signal, output); > wl_signal_emit(&output->destroy_signal, output); > @@ -4654,11 +4662,14 @@ weston_output_init(struct weston_output *output, > * > * Also notifies the compositor that an output is pending for > * configuration. > + * > + * The opposite of this operation is built into weston_output_destroy(). > */ > WL_EXPORT void > weston_compositor_add_pending_output(struct weston_output *output, > struct weston_compositor *compositor) > { > + wl_list_remove(&output->link); > wl_list_insert(compositor->pending_output_list.prev, &output->link); > wl_signal_emit(&compositor->output_pending_signal, output); > } > @@ -4716,9 +4727,6 @@ weston_output_enable(struct weston_output *output) > /* Make sure we have a transform set */ > assert(output->transform != UINT32_MAX); > > - /* Remove it from pending/disabled output list */ > - wl_list_remove(&output->link); > - > /* Verify we haven't reached the limit of 32 available output IDs */ > assert(ffs(~c->output_id_pool) > 0); > > @@ -4738,7 +4746,6 @@ weston_output_enable(struct weston_output *output) > wl_list_init(&output->animation_list); > wl_list_init(&output->resource_list); > wl_list_init(&output->feedback_list); > - wl_list_init(&output->link); > > /* Invert the output id pool and look for the lowest numbered > * switch (the least significant bit). Take that bit's position > @@ -4761,8 +4768,6 @@ weston_output_enable(struct weston_output *output) > weston_log("Enabling output \"%s\" failed.\n", output->name); > > weston_output_enable_undo(output); > - wl_list_insert(output->compositor->pending_output_list.prev, > - &output->link); > return -1; > } > > @@ -4815,10 +4820,6 @@ weston_output_disable(struct weston_output *output) > if (output->enabled) { > weston_compositor_remove_output(output); > weston_output_enable_undo(output); > - > - /* We need to preserve it somewhere so it can be destroyed on > shutdown > - if nobody wants to configure it again */ > - wl_list_insert(output->compositor->pending_output_list.prev, > &output->link); > } > > output->destroying = 0; > @@ -4847,6 +4848,7 @@ weston_output_destroy(struct weston_output *output) > weston_output_enable_undo(output); > } > > + wl_list_remove(&output->link); > free(output->name); > } > > _______________________________________________ wayland-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/wayland-devel
