void PluginManager::destroyPlugin(Plugin &plugin)
{
const PluginInfo *info = findPluginInfo(plugin.id());
// Cache the plugin only if it can be reused later.
if (info && info->cache)
{
plugin.addToCache(m_lruCachedPlugin, m_mruCachedPlugin);
if (++m_nCachedPlugins > m_cacheSize)
{
Plugin *p = m_lruCachedPlugin;
m_table.erase(p->id());
p->removeFromCache(m_lruCachedPlugin, m_mruCachedPlugin);
--m_nCachedPlugins;
// Defer destroying the plugin.
g_idle_add_full(G_PRIORITY_LOW,
destroyPluginDeferred,
new std::pair<PluginManager *, Plugin *>(this, p),
NULL);
}
}
else
// Defer destroying the plugin.
g_idle_add_full(G_PRIORITY_LOW,
destroyPluginDeferred,
new std::pair<PluginManager *, Plugin *>(this, &plugin),
NULL);
}
Extension *PluginManager::acquireExtension(const char *extensionId)
{
std::string pluginId(extensionId, strrchr(extensionId, '/') - extensionId);
PluginInfo *info = m_registry.find(pluginId.c_str())->second;
// Retrieve the plugin if it is active, fetch the plugin from the cache if
// it is cached or create it.
Plugin *plugin;
bool newPlugin;
Table::const_iterator it = m_table.find(pluginId.c_str());
if (it != m_table.end())
{
plugin = it->second;
if (plugin->cached())
{
plugin->removeFromCache(m_lruCachedPlugin, m_mruCachedPlugin);
--m_nCachedPlugins;
newPlugin = true;
}
else
newPlugin = false;
}
else
{
char *module = g_module_build_path(m_modulesDirName.c_str(),
info->module.c_str());
std::string error;
plugin = Plugin::activate(*this, pluginId.c_str(), module, error);
g_free(module);
if (!plugin)
{
GtkWidget *dialog;
dialog = gtk_message_dialog_new(
NULL,
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
_("Samoyed failed to activate plugin \"%s\"."),
pluginId.c_str());
if (!error.empty())
Samoyed::gtkMessageDialogAddDetails(
dialog,
_("%s"),
error.c_str());
gtk_dialog_set_default_response(GTK_DIALOG(dialog),
GTK_RESPONSE_CLOSE);
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
return NULL;
}
m_table.insert(std::make_pair(plugin->id(), plugin));
newPlugin = true;
}
// Acquire the extension from the plugin.
Extension *ext = plugin->acquireExtension(extensionId);
if (!ext && newPlugin)
{
plugin->addToCache(m_lruCachedPlugin, m_mruCachedPlugin);
if (++m_nCachedPlugins > m_cacheSize)
{
Plugin *p = m_lruCachedPlugin;
m_table.erase(p->id());
p->removeFromCache(m_lruCachedPlugin, m_mruCachedPlugin);
--m_nCachedPlugins;
// Defer destroying the plugin.
g_idle_add_full(G_PRIORITY_LOW,
destroyPluginDeferred,
new std::pair<PluginManager *, Plugin *>(this, p),
NULL);
}
}
return ext;
}
