* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
* ---------------------------------------------------
*/
-#ifndef __BASE_H__
-#define __BASE_H__
+#ifndef __BASE_H__
+#define __BASE_H__
-#include "inspircd_config.h"
-#include <time.h>
#include <map>
#include <deque>
#include <string>
-/** A private data store for an Extensible class */
-typedef std::map<std::string,char*> ExtensibleStore;
-
/** The base class for all inspircd classes.
* Wherever possible, all classes you create should inherit from this,
* giving them the ability to be passed to various core functions
* as 'anonymous' classes.
-*/
+*/
class CoreExport classbase
{
public:
- /** Time that the object was instantiated (used for TS calculation etc)
- */
- time_t age;
-
- /** Constructor.
- * Sets the object's time
- */
classbase();
- /** Destructor.
- * Does sweet FA.
+ /**
+ * Called just prior to destruction via cull list.
+ *
+ * @return true to allow the delete, or false to halt the delete
*/
- virtual ~classbase() { }
+ virtual bool cull();
+ virtual ~classbase();
};
-/** class Extensible is the parent class of many classes such as User and Channel.
- * class Extensible implements a system which allows modules to 'extend' the class by attaching data within
- * a map associated with the object. In this way modules can store their own custom information within user
- * objects, channel objects and server objects, without breaking other modules (this is more sensible than using
- * a flags variable, and each module defining bits within the flag as 'theirs' as it is less prone to conflict and
- * supports arbitary data storage).
+/** The base class for inspircd classes that support reference counting.
+ * Any objects that do not have a well-defined lifetime should inherit from
+ * this
*/
-class CoreExport Extensible : public classbase
+class CoreExport refcountbase : public classbase
{
- /** Private data store.
- * Holds all extensible metadata for the class.
- */
- ExtensibleStore Extension_Items;
-
-public:
+ unsigned int refcount;
+ public:
+ refcountbase();
+ virtual bool cull();
+ virtual ~refcountbase();
+ inline unsigned int GetReferenceCount() const { return refcount; }
+ friend class reference_base;
+};
- /** Extend an Extensible class.
- *
- * @param key The key parameter is an arbitary string which identifies the extension data
- * @param p This parameter is a pointer to any data you wish to associate with the object
- *
- * You must provide a key to store the data as via the parameter 'key' and store the data
- * in the templated parameter 'p'.
- * The data will be inserted into the map. If the data already exists, you may not insert it
- * twice, Extensible::Extend will return false in this case.
- *
- * @return Returns true on success, false if otherwise
- */
- template<typename T> bool Extend(const std::string &key, T* p)
- {
- /* This will only add an item if it doesnt already exist,
- * the return value is a std::pair of an iterator to the
- * element, and a bool saying if it was actually inserted.
- */
- return this->Extension_Items.insert(std::make_pair(key, (char*)p)).second;
- }
+class CoreExport reference_base
+{
+ protected:
+ static inline unsigned int inc(refcountbase* v) { return ++(v->refcount); }
+ static inline unsigned int dec(refcountbase* v) { return --(v->refcount); }
+};
- /** Extend an Extensible class.
- *
- * @param key The key parameter is an arbitary string which identifies the extension data
- *
- * You must provide a key to store the data as via the parameter 'key', this single-parameter
- * version takes no 'data' parameter, this is used purely for boolean values.
- * The key will be inserted into the map with a NULL 'data' pointer. If the key already exists
- * then you may not insert it twice, Extensible::Extend will return false in this case.
- *
- * @return Returns true on success, false if otherwise
- */
- bool Extend(const std::string &key)
+template <typename T>
+class reference : public reference_base
+{
+ T* value;
+ public:
+ reference() : value(0) { }
+ reference(T* v) : value(v) { if (value) inc(value); }
+ reference(const reference& v) : value(v.value) { if (value) inc(value); }
+ reference<T>& operator=(const reference<T>& other)
{
- /* This will only add an item if it doesnt already exist,
- * the return value is a std::pair of an iterator to the
- * element, and a bool saying if it was actually inserted.
- */
- return this->Extension_Items.insert(std::make_pair(key, (char*)NULL)).second;
+ if (other.value)
+ inc(other.value);
+ this->reference::~reference();
+ value = other.value;
+ return *this;
}
- /** Shrink an Extensible class.
- *
- * @param key The key parameter is an arbitary string which identifies the extension data
- *
- * You must provide a key name. The given key name will be removed from the classes data. If
- * you provide a nonexistent key (case is important) then the function will return false.
- * @return Returns true on success.
- */
- bool Shrink(const std::string &key);
-
- /** Get an extension item.
- *
- * @param key The key parameter is an arbitary string which identifies the extension data
- * @param p If you provide a non-existent key, this value will be NULL. Otherwise a pointer to the item you requested will be placed in this templated parameter.
- * @return Returns true if the item was found and false if it was nor, regardless of wether 'p' is NULL. This allows you to store NULL values in Extensible.
- */
- template<typename T> bool GetExt(const std::string &key, T* &p)
+ ~reference()
{
- ExtensibleStore::iterator iter = this->Extension_Items.find(key); /* Find the item */
- if(iter != this->Extension_Items.end())
- {
- p = (T*)iter->second; /* Item found */
- return true;
- }
- else
+ if (value)
{
- p = NULL; /* Item not found */
- return false;
+ int rc = dec(value);
+ if (rc == 0 && value->cull())
+ delete value;
}
}
-
- /** Get an extension item.
- *
- * @param key The key parameter is an arbitary string which identifies the extension data
- * @return Returns true if the item was found and false if it was not.
- *
- * This single-parameter version only checks if the key exists, it does nothing with
- * the 'data' field and is probably only useful in conjunction with the single-parameter
- * version of Extend().
- */
- bool GetExt(const std::string &key)
- {
- return (this->Extension_Items.find(key) != this->Extension_Items.end());
- }
-
- /** Get a list of all extension items names.
- * @param list A deque of strings to receive the list
- * @return This function writes a list of all extension items stored in this object by name into the given deque and returns void.
- */
- void GetExtList(std::deque<std::string> &list);
-};
-
-/** BoolSet is a utility class designed to hold eight bools in a bitmask.
- * Use BoolSet::Set and BoolSet::Get to set and get bools in the bitmask,
- * and Unset and Invert for special operations upon them.
- */
-class CoreExport BoolSet : public classbase
-{
- /** Actual bit values */
- char bits;
-
- public:
-
- /** The default constructor initializes the BoolSet to all values unset.
- */
- BoolSet();
-
- /** This constructor copies the default bitmask from a char
- */
- BoolSet(char bitmask);
-
- /** The Set method sets one bool in the set.
- *
- * @param number The number of the item to set. This must be between 0 and 7.
- */
- void Set(int number);
-
- /** The Get method returns the value of one bool in the set
- *
- * @param number The number of the item to retrieve. This must be between 0 and 7.
- *
- * @return True if the item is set, false if it is unset.
- */
- bool Get(int number);
-
- /** The Unset method unsets one value in the set
- *
- * @param number The number of the item to set. This must be between 0 and 7.
- */
- void Unset(int number);
-
- /** The Unset method inverts (flips) one value in the set
- *
- * @param number The number of the item to invert. This must be between 0 and 7.
- */
- void Invert(int number);
-
- /** Compare two BoolSets
- */
- bool operator==(BoolSet other);
-
- /** OR two BoolSets together
- */
- BoolSet operator|(BoolSet other);
-
- /** AND two BoolSets together
- */
- BoolSet operator&(BoolSet other);
-
- /** Assign one BoolSet to another
- */
- bool operator=(BoolSet other);
+ inline const T* operator->() const { return value; }
+ inline const T& operator*() const { return *value; }
+ inline T* operator->() { return value; }
+ inline T& operator*() { return *value; }
+ inline operator bool() const { return value; }
+ inline operator T*() const { return value; }
};
/** This class can be used on its own to represent an exception, or derived to represent a module-specific exception.
projects / user / henk / code / inspircd.git / blobdiff