logic: Fixed bugs in TaskParse scheduling

* Added TaskParse as base for TaskParseCxx and TaskParseJava
* Fixed increment and decrement of indexer_count on blackboard not atomic
* Fixed TaskInjectStorage finished before TaskParse started
* Fixed project not cleared when refreshing on now empty project
* Fixed TaskInjectStorage overheating when nothing to do

src/lib/utility/scheduling/Blackboard.cpp

@@ -13,6 +13,11 @@ Blackboard::~Blackboard()
 {
 }
 
+std::mutex& Blackboard::getMutex()
+{
+	return m_mutex;
+}
+
 bool Blackboard::exists(const std::string& key)
 {
 	std::lock_guard<std::mutex> lock(m_itemMutex);

src/lib/utility/scheduling/Blackboard.h

@@ -37,6 +37,8 @@ public:
 	Blackboard(std::shared_ptr<Blackboard> parent);
 	~Blackboard();
 
+	std::mutex& getMutex();
+
 	template <typename T>
 	void set(const std::string& key, const T& value);
 
@@ -51,6 +53,8 @@ private:
 
 	std::shared_ptr<Blackboard> m_parent;
 
+	std::mutex m_mutex;
+
 	ItemMap m_items;
 	std::mutex m_itemMutex;
 };