commit 8dd7ab19220d06c0181fc422ea11d17ea97aa154
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Mon Jun 27 19:40:08 2022 +0200
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Mon Jun 27 19:40:08 2022 +0200

    Fix for issue #450 :  Fl_Counter slips into infinite loop (V2).
    
    Need to poll only for the file descriptor associated to the wayland display.

 src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
index dad143c..fbf27ad 100644
--- src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
+++ src/drivers/Wayland/Fl_Wayland_Screen_Driver.cxx
@@ -39,6 +39,7 @@
 #include "text-input-client-protocol.h"
 #include <assert.h>
 #include <sys/mman.h>
+#include <poll.h>
 extern "C" {
   bool libdecor_get_cursor_settings(char **theme, int *size);
 }
@@ -1056,10 +1057,13 @@ static const struct wl_registry_listener registry_listener = {
 };
 
 
-static void fd_callback(int unused, struct wl_display *display) {
-  wl_display_dispatch(display);
-  static Fl_Wayland_System_Driver *sys_dr = (Fl_Wayland_System_Driver*)Fl::system_driver();
-  while (sys_dr->poll_or_select() > 0) wl_display_dispatch(display);
+static void fd_callback(int fd, struct wl_display *display) {
+  struct pollfd fds;
+  fds.fd = fd;
+  fds.events = POLLIN;
+  fds.revents = 0;
+  do wl_display_dispatch(display);
+  while (poll(&fds, 1, 0) > 0);
 }