[PATCH 1/4] kernel-shark: Define addPlugin method for KsPluginManager

[Yordan Karadzhov <ykaradzhov@vmware.com>]

The method can be used to register and load a user-defined plugin.
All other previously loaded plugins will be reloaded.

Signed-off-by: Yordan Karadzhov <ykaradzhov@vmware.com>
---
 kernel-shark/src/KsUtils.cpp | 17 +++++++++++++++++
 kernel-shark/src/KsUtils.hpp |  3 +++
 2 files changed, 20 insertions(+)

diff --git a/kernel-shark/src/KsUtils.cpp b/kernel-shark/src/KsUtils.cpp
index d7b1753..4d05bda 100644
--- a/kernel-shark/src/KsUtils.cpp
+++ b/kernel-shark/src/KsUtils.cpp
@@ -596,6 +596,23 @@ void KsPluginManager::unregisterPlugin(const QString &plugin)
 	}
 }
 
+/** @brief Add to the list and load a user-provided plugin. All other
+ *	   previously loaded plugins will be reloaded.
+ *
+ * @param fileName: the library file (.so) of the plugin.
+*/
+void KsPluginManager::addPlugin(const QString &fileName)
+{
+	kshark_context *kshark_ctx(nullptr);
+
+	if (!kshark_instance(&kshark_ctx))
+		return;
+
+	kshark_handle_plugins(kshark_ctx, KSHARK_PLUGIN_CLOSE);
+	registerPlugin(fileName);
+	kshark_handle_plugins(kshark_ctx, KSHARK_PLUGIN_INIT);
+}
+
 /** Unload all plugins. */
 void KsPluginManager::unloadAll()
 {
diff --git a/kernel-shark/src/KsUtils.hpp b/kernel-shark/src/KsUtils.hpp
index cb95b4f..ae7f6d1 100644
--- a/kernel-shark/src/KsUtils.hpp
+++ b/kernel-shark/src/KsUtils.hpp
@@ -210,6 +210,9 @@ public:
 
 	void registerPlugin(const QString &plugin);
 	void unregisterPlugin(const QString &plugin);
+
+	void addPlugin(const QString &fileName);
+
 	void unloadAll();
 
 	void updatePlugins(QVector<int> pluginId);
-- 
2.19.1