Shut down the engine when the last tab is closed

src/plugin/AdblockPlusClient.h

 #ifndef _ADBLOCK_PLUS_CLIENT_H_
 #define _ADBLOCK_PLUS_CLIENT_H_
 
 
 #include "PluginTypedef.h"
 #include "PluginClientBase.h"
 #include "../shared/Communication.h"
+#include "../shared/CriticalSection.h"
 
 
 class CPluginFilter;
 
 struct SubscriptionDescription
 {
   std::wstring url;
   std::wstring title;
   std::wstring specialization;
   bool listed;
 };
 
 class CAdblockPlusClient : public CPluginClientBase
 {
 
 private:
 
   std::auto_ptr<CPluginFilter> m_filter;
 
   CComAutoCriticalSection m_criticalSectionFilter;
   CComAutoCriticalSection m_criticalSectionCache;
 
   std::map<CString,bool> m_cacheBlockedSources;
 
+  std::shared_ptr<Communication::Pipe> enginePipe;
+  CriticalSection enginePipeLock;
+
 
   // Private constructor used by the singleton pattern
   CAdblockPlusClient();
+
+  bool CallEngine(Communication::OutputBuffer& message, Communication::InputBuffer& inputBuffer = Communication::InputBuffer());
+  bool CallEngine(Communication::ProcType proc, Communication::InputBuffer& inputBuffer = Communication::InputBuffer());
 public:
 
   static CAdblockPlusClient* s_instance;
 
   ~CAdblockPlusClient();
 
   static CAdblockPlusClient* GetInstance();
 
   // Removes the url from the list of whitelisted urls if present
   // Only called from ui thread
@@ skipping 21 matching lines @@
   bool GetPref(const std::wstring& name, bool defaultValue = false);
   int64_t GetPref(const std::wstring& name, int64_t defaultValue = 0);
   void CheckForUpdates();
   std::wstring GetAppLocale();
   std::wstring GetDocumentationLink();
 
   bool IsFirstRun();
 };
 
 #endif // _ADBLOCK_PLUS_CLIENT_H_