[gnome-software] Make vfunc cache threadsafe

[Kalev Lember <klember src gnome org>]

commit 54a369473e80775bd2916cf05f8babd6b2ac1683
Author: Kalev Lember <klember redhat com>
Date:   Fri Dec 2 13:01:31 2016 +0100

    Make vfunc cache threadsafe

 src/gs-plugin.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-plugin.c b/src/gs-plugin.c
index f154c82..caa6681 100644
--- a/src/gs-plugin.c
+++ b/src/gs-plugin.c
@@ -67,6 +67,7 @@ typedef struct
        GsAppList               *global_cache;
        GPtrArray               *rules[GS_PLUGIN_RULE_LAST];
        GHashTable              *vfuncs;                /* string:pointer */
+       GMutex                   vfuncs_mutex;
        gboolean                 enabled;
        gchar                   *locale;                /* allow-none */
        gchar                   *language;              /* allow-none */
@@ -204,6 +205,7 @@ gs_plugin_finalize (GObject *object)
        g_hash_table_unref (priv->vfuncs);
        g_mutex_clear (&priv->cache_mutex);
        g_mutex_clear (&priv->timer_mutex);
+       g_mutex_clear (&priv->vfuncs_mutex);
        if (priv->module != NULL)
                g_module_close (priv->module);
 }
@@ -339,6 +341,7 @@ gs_plugin_get_symbol (GsPlugin *plugin, const gchar *function_name)
 {
        GsPluginPrivate *priv = gs_plugin_get_instance_private (plugin);
        gpointer func = NULL;
+       g_autoptr(GMutexLocker) locker = g_mutex_locker_new (&priv->vfuncs_mutex);
 
        /* disabled plugins shouldn't be checked */
        if (!priv->enabled)
@@ -1603,6 +1606,7 @@ gs_plugin_init (GsPlugin *plugin)
                                              g_free, NULL);
        g_mutex_init (&priv->cache_mutex);
        g_mutex_init (&priv->timer_mutex);
+       g_mutex_init (&priv->vfuncs_mutex);
        g_rw_lock_init (&priv->rwlock);
 }