[v3,01/10] libxl: event: Rename poller.fds_changed to .fds_deregistered

Commit Message

Ian Jackson Jan. 17, 2020, 2:47 p.m. UTC

This is only for deregistration.  We are going to add another variable
for new events, with different semantics, and this overly-general name
will become confusing.

Signed-off-by: Ian Jackson <[e-mail]>
Reviewed-by: George Dunlap <[e-mail]>
Tested-by: George Dunlap <[e-mail]>
---
 tools/libxl/libxl_event.c    | 8 ++++----
 tools/libxl/libxl_internal.h | 6 +++---
 2 files changed, 7 insertions(+), 7 deletions(-)

Patch

diff --git a/tools/libxl/libxl_event.c b/tools/libxl/libxl_event.c
index aa8b7d1945..1210c1bfb3 100644
--- a/tools/libxl/libxl_event.c
+++ b/tools/libxl/libxl_event.c
@@ -239,7 +239,7 @@  void libxl__ev_fd_deregister(libxl__gc *gc, libxl__ev_fd *ev)
     ev->fd = -1;
 
     LIBXL_LIST_FOREACH(poller, &CTX->pollers_fds_changed, fds_changed_entry)
-        poller->fds_changed = 1;
+        poller->fds_deregistered = 1;
 
  out:
     CTX_UNLOCK;
@@ -1120,7 +1120,7 @@  static int beforepoll_internal(libxl__gc *gc, libxl__poller *poller,
 
     *nfds_io = used;
 
-    poller->fds_changed = 0;
+    poller->fds_deregistered = 0;
 
     libxl__ev_time *etime = LIBXL_TAILQ_FIRST(&CTX->etimes);
     if (etime) {
@@ -1186,7 +1186,7 @@  static int afterpoll_check_fd(libxl__poller *poller,
             /* again, stale slot entry */
             continue;
 
-        assert(poller->fds_changed || !(fds[slot].revents & POLLNVAL));
+        assert(poller->fds_deregistered || !(fds[slot].revents & POLLNVAL));
 
         /* we mask in case requested events have changed */
         int slot_revents = fds[slot].revents & events;
@@ -1626,7 +1626,7 @@  int libxl__poller_init(libxl__gc *gc, libxl__poller *p)
     int rc;
     p->fd_polls = 0;
     p->fd_rindices = 0;
-    p->fds_changed = 0;
+    p->fds_deregistered = 0;
 
     rc = libxl__pipe_nonblock(CTX, p->wakeup_pipe);
     if (rc) goto out;
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index ba8c9b41ab..c5b71d15f0 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -629,14 +629,14 @@  struct libxl__poller {
     /*
      * We also use the poller to record whether any fds have been
      * deregistered since we entered poll.  Each poller which is not
-     * idle is on the list pollers_fds_changed.  fds_changed is
+     * idle is on the list pollers_fds_changed.  fds_deregistered is
      * cleared by beforepoll, and tested by afterpoll.  Whenever an fd
-     * event is deregistered, we set the fds_changed of all non-idle
+     * event is deregistered, we set the fds_deregistered of all non-idle
      * pollers.  So afterpoll can tell whether any POLLNVAL is
      * plausibly due to an fd being closed and reopened.
      */
     LIBXL_LIST_ENTRY(libxl__poller) fds_changed_entry;
-    bool fds_changed;
+    bool fds_deregistered;
 };
 
 struct libxl__gc {