ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2024-12-18 21:27:56 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

gui_fb: deliver initial mode signal if pending

Browse Source 
This patch handles the case where a mode change happens in-between
session creation and the registration of the mode-signal handler,
which can result in a sporadic loss of response to mode changes.

Noticed while working on issue #5286.
This commit is contained in:
Norman Feske 2024-10-25 18:50:57 +02:00 committed by Christian Helmuth
parent f94e0a3464
commit 8ed87dae71
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
repos/os/src/server/gui_fb/main.cc
View File

@ -104,6 +104,8 @@ struct Framebuffer::Session_component : Genode::Rpc_object<Framebuffer::Session>
*/
Framebuffer::Mode _next_mode;
bool _mode_sigh_pending = false;
/*
* Number of bytes used for backing the current virtual framebuffer at
* the GUI server.
@ -168,6 +170,8 @@ struct Framebuffer::Session_component : Genode::Rpc_object<Framebuffer::Session>
if (_mode_sigh.valid())
Signal_transmitter(_mode_sigh).submit();
else
_mode_sigh_pending = true;
}
Gui::Area size() const
@ -206,6 +210,12 @@ struct Framebuffer::Session_component : Genode::Rpc_object<Framebuffer::Session>
void mode_sigh(Signal_context_capability sigh) override
{
_mode_sigh = sigh;
/* notify mode change that happened just before 'mode_sigh' */
if (_mode_sigh.valid() && _mode_sigh_pending) {
Signal_transmitter(_mode_sigh).submit();
_mode_sigh_pending = false;
}
}
void refresh(Rect rect) override