MEDIUM: fd/poller: make the update-list per-group
The update-list needs to be per-group because its inspection is based
on a mask and we need to be certain when scanning it if a mask is for
the same thread or another one. Once per-group there's no doubt about
it, even if the FD's polling changes, the entry remains valid. It will
be needed to check the tgid though.
Note that a soft-stop or pause/resume might not necessarily work here
with tgroups>1, because the operation might be delivered to a thread
that doesn't belong to the group and whoe update mask will not reflect
one that is interesting here. We can't do better at this stage.
diff --git a/src/ev_poll.c b/src/ev_poll.c
index b25d1dc..093184f 100644
--- a/src/ev_poll.c
+++ b/src/ev_poll.c
@@ -122,7 +122,7 @@
}
/* Now scan the global update list */
- for (old_fd = fd = update_list.first; fd != -1; fd = fdtab[fd].update.next) {
+ for (old_fd = fd = update_list[tgid - 1].first; fd != -1; fd = fdtab[fd].update.next) {
if (fd == -2) {
fd = old_fd;
continue;