X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=include%2Fbase.h;h=7926779ebd0ea21508ccc7d339da130cc2200eb7;hb=511c11b8da024363fe2711a5ea9d600326073c8c;hp=0de37e781d6653796d589078e3dcf27a3f01d3bc;hpb=be10eab6ce68d4f06cc7b14bc2fca35e005ce6b5;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/include/base.h b/include/base.h
index 0de37e781..7926779eb 100644
--- a/include/base.h
+++ b/include/base.h
@@ -2,7 +2,7 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
  * See: http://wiki.inspircd.org/Credits
  *
  * This program is free but copyrighted software; see
@@ -36,8 +36,6 @@ class CoreExport classbase
 
 	/**
 	 * Called just prior to destruction via cull list.
-	 *
-	 * @return true to allow the delete, or false to halt the delete
 	 */
 	virtual CullResult cull();
 	virtual ~classbase();
@@ -54,11 +52,12 @@ class CoreExport interfacebase
 {
  public:
 	interfacebase() {}
+	static inline void* operator new(size_t, void* m) { return m; }
  private:
 	interfacebase(const interfacebase&);
 	void operator=(const interfacebase&);
-	void* operator new(size_t);
-	void operator delete(void*);
+	static void* operator new(size_t);
+	static void operator delete(void*);
 };
 
 /** The base class for inspircd classes that support reference counting.
@@ -81,32 +80,49 @@ class CoreExport refcountbase
 	refcountbase();
 	virtual ~refcountbase();
 	inline unsigned int GetReferenceCount() const { return refcount; }
-	friend class reference_base;
+	static inline void* operator new(size_t, void* m) { return m; }
+	static void* operator new(size_t);
+	static void operator delete(void*);
+	inline void refcount_inc() const { refcount++; }
+	inline bool refcount_dec() const { refcount--; return !refcount; }
  private:
 	// uncopyable
 	refcountbase(const refcountbase&);
 	void operator=(const refcountbase&);
 };
 
-class CoreExport reference_base
+/** Base class for use count tracking. Uses reference<>, but does not
+ * cause object deletion when the last user is removed.
+ *
+ * Safe for use as a second parent class; will not add a second vtable.
+ */
+class CoreExport usecountbase
 {
- protected:
-	template<typename T> static inline unsigned int inc(T* v) { return ++(v->refcount); }
-	template<typename T> static inline unsigned int dec(T* v) { return --(v->refcount); }
+	mutable unsigned int usecount;
+ public:
+	usecountbase() : usecount(0) { }
+	~usecountbase();
+	inline unsigned int GetUseCount() const { return usecount; }
+	inline void refcount_inc() const { usecount++; }
+	inline bool refcount_dec() const { usecount--; return false; }
+ private:
+	// uncopyable
+	usecountbase(const usecountbase&);
+	void operator=(const usecountbase&);
 };
 
 template <typename T>
-class reference : public reference_base
+class reference
 {
 	T* value;
  public:
 	reference() : value(0) { }
-	reference(T* v) : value(v) { if (value) inc(value); }
-	reference(const reference<T>& v) : value(v.value) { if (value) inc(value); }
+	reference(T* v) : value(v) { if (value) value->refcount_inc(); }
+	reference(const reference<T>& v) : value(v.value) { if (value) value->refcount_inc(); }
 	reference<T>& operator=(const reference<T>& other)
 	{
 		if (other.value)
-			inc(other.value);
+			other.value->refcount_inc();
 		this->reference::~reference();
 		value = other.value;
 		return *this;
@@ -114,12 +130,8 @@ class reference : public reference_base
 
 	~reference()
 	{
-		if (value)
-		{
-			int rc = dec(value);
-			if (rc == 0)
-				delete value;
-		}
+		if (value && value->refcount_dec())
+			delete value;
 	}
 	inline operator bool() const { return value; }
 	inline operator T*() const { return value; }
@@ -127,11 +139,10 @@ class reference : public reference_base
 	inline T& operator*() const { return *value; }
 	inline bool operator<(const reference<T>& other) const { return value < other.value; }
 	inline bool operator>(const reference<T>& other) const { return value > other.value; }
-	inline bool operator==(const reference<T>& other) const { return value == other.value; }
-	inline bool operator!=(const reference<T>& other) const { return value != other.value; }
+	static inline void* operator new(size_t, void* m) { return m; }
  private:
-	void* operator new(size_t);
-	void operator delete(void*);
+	static void* operator new(size_t);
+	static void operator delete(void*);
 };
 
 /** This class can be used on its own to represent an exception, or derived to represent a module-specific exception.
@@ -142,14 +153,13 @@ class reference : public reference_base
  */
 class CoreExport CoreException : public std::exception
 {
- protected:
+ public:
 	/** Holds the error message to be displayed
 	 */
 	const std::string err;
 	/** Source of the exception
 	 */
 	const std::string source;
- public:
 	/** Default constructor, just uses the error mesage 'Core threw an exception'.
 	 */
 	CoreException() : err("Core threw an exception"), source("The core") {}
@@ -179,8 +189,6 @@ class CoreExport CoreException : public std::exception
 	}
 };
 
-class Module;
-
 class CoreExport ModuleException : public CoreException
 {
  public:
@@ -189,20 +197,35 @@ class CoreExport ModuleException : public CoreException
 	ModuleException(const std::string &message, Module* me = NULL);
 };
 
-class CoreExport ModuleRef : public reference_base
+typedef const reference<Module> ModuleRef;
+
+enum ServiceType {
+	/** is a Command */
+	SERVICE_COMMAND,
+	/** is a ModeHandler */
+	SERVICE_MODE,
+	/** is a metadata descriptor */
+	SERVICE_METADATA,
+	/** is a data processing provider (MD5, SQL) */
+	SERVICE_DATA,
+	/** is an I/O hook provider (SSL) */
+	SERVICE_IOHOOK
+};
+
+/** A structure defining something that a module can provide */
+class CoreExport ServiceProvider : public classbase
 {
-	Module* const value;
  public:
-	ModuleRef(Module* v);
-	~ModuleRef();
-	inline operator Module*() const { return value; }
-	inline Module* operator->() const { return value; }
-	inline Module& operator*() const { return *value; }
- private:
-	ModuleRef(const ModuleRef&);
-	void operator=(const ModuleRef&);
-	void* operator new(size_t);
-	void operator delete(void*);
+	/** Module that is providing this service */
+	ModuleRef creator;
+	/** Name of the service being provided */
+	const std::string name;
+	/** Type of service (must match object type) */
+	const ServiceType service;
+	ServiceProvider(Module* Creator, const std::string& Name, ServiceType Type)
+		: creator(Creator), name(Name), service(Type) {}
+	virtual ~ServiceProvider();
 };
 
+
 #endif