libxl: event: Rename ctx.pollers_fd_changed to .pollers_active

We are going to use this a bit more widely.  Make the name more
general.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Reviewed-by: George Dunlap <george.dunlap@citrix.com>
Tested-by: George Dunlap <george.dunlap@citrix.com>

tools/libxl/libxl.c

@@ -48,7 +48,7 @@ int libxl_ctx_alloc(libxl_ctx **pctx, int version,
     ctx->poller_app = 0;
     LIBXL_LIST_INIT(&ctx->pollers_event);
     LIBXL_LIST_INIT(&ctx->pollers_idle);
-    LIBXL_LIST_INIT(&ctx->pollers_fds_changed);
+    LIBXL_LIST_INIT(&ctx->pollers_active);
 
     LIBXL_LIST_INIT(&ctx->efds);
     LIBXL_TAILQ_INIT(&ctx->etimes);
@@ -177,7 +177,7 @@ int libxl_ctx_free(libxl_ctx *ctx)
     libxl__poller_put(ctx, ctx->poller_app);
     ctx->poller_app = NULL;
     assert(LIBXL_LIST_EMPTY(&ctx->pollers_event));
-    assert(LIBXL_LIST_EMPTY(&ctx->pollers_fds_changed));
+    assert(LIBXL_LIST_EMPTY(&ctx->pollers_active));
     libxl__poller *poller, *poller_tmp;
     LIBXL_LIST_FOREACH_SAFE(poller, &ctx->pollers_idle, entry, poller_tmp) {
         libxl__poller_dispose(poller);

tools/libxl/libxl_event.c

@@ -238,7 +238,7 @@ void libxl__ev_fd_deregister(libxl__gc *gc, libxl__ev_fd *ev)
     LIBXL_LIST_REMOVE(ev, entry);
     ev->fd = -1;
 
-    LIBXL_LIST_FOREACH(poller, &CTX->pollers_fds_changed, fds_changed_entry)
+    LIBXL_LIST_FOREACH(poller, &CTX->pollers_active, active_entry)
         poller->fds_deregistered = 1;
 
  out:
@@ -1663,15 +1663,15 @@ libxl__poller *libxl__poller_get(libxl__gc *gc)
         }
     }
 
-    LIBXL_LIST_INSERT_HEAD(&CTX->pollers_fds_changed, p,
-                           fds_changed_entry);
+    LIBXL_LIST_INSERT_HEAD(&CTX->pollers_active, p,
+                           active_entry);
     return p;
 }
 
 void libxl__poller_put(libxl_ctx *ctx, libxl__poller *p)
 {
     if (!p) return;
-    LIBXL_LIST_REMOVE(p, fds_changed_entry);
+    LIBXL_LIST_REMOVE(p, active_entry);
     LIBXL_LIST_INSERT_HEAD(&ctx->pollers_idle, p, entry);
 }
 

tools/libxl/libxl_internal.h

@@ -629,13 +629,13 @@ 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_deregistered is
+     * idle is on the list pollers_active.  fds_deregistered is
      * cleared by beforepoll, and tested by afterpoll.  Whenever an fd
      * 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;
+    LIBXL_LIST_ENTRY(libxl__poller) active_entry;
     bool fds_deregistered;
 };
 
@@ -678,7 +678,7 @@ struct libxl__ctx {
 
     libxl__poller *poller_app; /* libxl_osevent_beforepoll and _afterpoll */
     LIBXL_LIST_HEAD(, libxl__poller) pollers_event, pollers_idle;
-    LIBXL_LIST_HEAD(, libxl__poller) pollers_fds_changed;
+    LIBXL_LIST_HEAD(, libxl__poller) pollers_active;
 
     LIBXL_SLIST_HEAD(libxl__osevent_hook_nexi, libxl__osevent_hook_nexus)
         hook_fd_nexi_idle, hook_timeout_nexi_idle;