src/plugin.c: Assure rf->rf_next_read is initialized.

Otherwise read callbacks will be called twice on startup, causing all
sorts of trouble.

diff --git a/src/plugin.c b/src/plugin.c
index f23ef07..453e896 100644 (file)
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -965,6 +965,9 @@ static int plugin_insert_read (read_func_t *rf)
        int status;
        llentry_t *le;
 
+       rf->rf_next_read = cdtime ();
+       rf->rf_effective_interval = rf->rf_interval;
+
        pthread_mutex_lock (&read_lock);
 
        if (read_list == NULL)
@@ -1026,43 +1029,12 @@ static int plugin_insert_read (read_func_t *rf)
        return (0);
 } /* int plugin_insert_read */
 
-static int read_cb_wrapper (user_data_t *ud)
-{
-       int (*callback) (void);
-
-       if (ud == NULL)
-               return -1;
-
-       callback = ud->data;
-       return callback();
-} /* int read_cb_wrapper */
-
 int plugin_register_read (const char *name,
                int (*callback) (void))
 {
        read_func_t *rf;
-       plugin_ctx_t ctx = plugin_get_ctx ();
        int status;
 
-       if (ctx.interval != 0) {
-               /* If ctx.interval is not zero (== use the plugin or global
-                * interval), we need to use the "complex" read callback,
-                * because only that allows to specify a different interval.
-                * Wrap the callback using read_cb_wrapper(). */
-               struct timespec interval;
-               user_data_t user_data;
-
-               user_data.data = callback;
-               user_data.free_func = NULL;
-
-               CDTIME_T_TO_TIMESPEC (ctx.interval, &interval);
-               return plugin_register_complex_read (/* group = */ NULL,
-                               name, read_cb_wrapper, &interval, &user_data);
-       }
-
-       DEBUG ("plugin_register_read: default_interval = %.3f",
-                       CDTIME_T_TO_DOUBLE(plugin_get_interval ()));
-
        rf = malloc (sizeof (*rf));
        if (rf == NULL)
        {
@@ -1074,12 +1046,11 @@ int plugin_register_read (const char *name,
        rf->rf_callback = (void *) callback;
        rf->rf_udata.data = NULL;
        rf->rf_udata.free_func = NULL;
-       rf->rf_ctx = ctx;
+       rf->rf_ctx = plugin_get_ctx ();
        rf->rf_group[0] = '\0';
        sstrncpy (rf->rf_name, name, sizeof (rf->rf_name));
        rf->rf_type = RF_SIMPLE;
-       rf->rf_interval = 0;
-       rf->rf_effective_interval = rf->rf_interval;
+       rf->rf_interval = plugin_get_interval ();
 
        status = plugin_insert_read (rf);
        if (status != 0)
@@ -1094,7 +1065,6 @@ int plugin_register_complex_read (const char *group, const char *name,
                user_data_t *user_data)
 {
        read_func_t *rf;
-       plugin_ctx_t ctx = plugin_get_ctx ();
        int status;
 
        rf = malloc (sizeof (*rf));
@@ -1113,17 +1083,9 @@ int plugin_register_complex_read (const char *group, const char *name,
        sstrncpy (rf->rf_name, name, sizeof (rf->rf_name));
        rf->rf_type = RF_COMPLEX;
        if (interval != NULL)
-       {
                rf->rf_interval = TIMESPEC_TO_CDTIME_T (interval);
-       }
-       else if (ctx.interval != 0)
-       {
-               rf->rf_interval = ctx.interval;
-       }
-       rf->rf_effective_interval = rf->rf_interval;
-
-       DEBUG ("plugin_register_read: interval = %.3f",
-                       CDTIME_T_TO_DOUBLE (rf->rf_interval));
+       else
+               rf->rf_interval = plugin_get_interval ();
 
        /* Set user data */
        if (user_data == NULL)
@@ -1136,7 +1098,7 @@ int plugin_register_complex_read (const char *group, const char *name,
                rf->rf_udata = *user_data;
        }
 
-       rf->rf_ctx = ctx;
+       rf->rf_ctx = plugin_get_ctx ();
 
        status = plugin_insert_read (rf);
        if (status != 0)