MINOR: proxy: define proxy watcher member

Define a new member watcher_list in proxy. It will be used to register
modules which iterate over the proxies list. This will ensure that the
operation is safe even if a backend is removed in parallel.

diff --git a/include/haproxy/proxy-t.h b/include/haproxy/proxy-t.h
index 2c85761bf3eacf35add0f66d6e24425c7da019b5..fcf9732bd9301d0f8ab42051885228dca7b30590 100644 (file)
--- a/include/haproxy/proxy-t.h
+++ b/include/haproxy/proxy-t.h
@@ -507,6 +507,7 @@ struct proxy {
        struct list filter_configs;             /* list of the filters that are declared on this proxy */
 
        struct guid_node guid;                  /* GUID global tree node */
+       struct mt_list watcher_list;            /* list of elems which currently references this proxy instance (currently only used with backends) */
 
        EXTRA_COUNTERS(extra_counters_fe);
        EXTRA_COUNTERS(extra_counters_be);

diff --git a/src/proxy.c b/src/proxy.c
index 5bed1ae95adbb17cae62867edf4e6ebb50956bdd..f9241ea1deb1ba171a15ccc59b964e0e44d04732 100644 (file)
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -1580,6 +1580,7 @@ void init_new_proxy(struct proxy *p)
 
        p->stream_new_from_sc = stream_new;
        guid_init(&p->guid);
+       MT_LIST_INIT(&p->watcher_list);
 
        p->extra_counters_fe = NULL;
        p->extra_counters_be = NULL;