Merge branch 'collectd-4.10' into collectd-5.3

[collectd.git] / src / plugin.c

diff --git a/src/plugin.c b/src/plugin.c
index 453e896..ed962a7 100644 (file)
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -332,7 +332,7 @@ static int plugin_load_file (char *file, uint32_t flags)
 
                ssnprintf (errbuf, sizeof (errbuf),
                                "lt_dlopen (\"%s\") failed: %s. "
-                               "The most common cause for this problem are "
+                               "The most common cause for this problem is "
                                "missing dependencies. Use ldd(1) to check "
                                "the dependencies of the plugin "
                                "/ shared object.",
@@ -1135,6 +1135,27 @@ int plugin_register_shutdown (const char *name,
                                (void *) callback, /* user_data = */ NULL));
 } /* int plugin_register_shutdown */
 
+static void plugin_free_data_sets (void)
+{
+       void *key;
+       void *value;
+
+       if (data_sets == NULL)
+               return;
+
+       while (c_avl_pick (data_sets, &key, &value) == 0)
+       {
+               data_set_t *ds = value;
+               /* key is a pointer to ds->type */
+
+               sfree (ds->ds);
+               sfree (ds);
+       }
+
+       c_avl_destroy (data_sets);
+       data_sets = NULL;
+} /* void plugin_free_data_sets */
+
 int plugin_register_data_set (const data_set_t *ds)
 {
        data_set_t *ds_copy;
@@ -1657,6 +1678,8 @@ void plugin_shutdown_all (void)
        destroy_all_callbacks (&list_notification);
        destroy_all_callbacks (&list_shutdown);
        destroy_all_callbacks (&list_log);
+
+       plugin_free_data_sets ();
 } /* void plugin_shutdown_all */
 
 int plugin_dispatch_missing (const value_list_t *vl) /* {{{ */
@@ -2016,6 +2039,12 @@ const data_set_t *plugin_get_ds (const char *name)
 {
        data_set_t *ds;
 
+       if (data_sets == NULL)
+       {
+               ERROR ("plugin_get_ds: No data sets are defined yet.");
+               return (NULL);
+       }
+
        if (c_avl_get (data_sets, name, (void *) &ds) != 0)
        {
                DEBUG ("No such dataset registered: %s", name);