HandlerSet.hh

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the terms of the GNU Lesser General Public License as published by the
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FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
more details.
 
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// Copyright (c) 1996-2024 Live Networks, Inc.  All rights reserved.
// Basic Usage Environment: for a simple, non-scripted, console application
// C++ header
 
#ifndef _HANDLER_SET_HH
#define _HANDLER_SET_HH
 
#ifndef _BOOLEAN_HH
#include "Boolean.hh"
#endif
 
 
class HandlerDescriptor {
  HandlerDescriptor(HandlerDescriptor* nextHandler);
  virtual ~HandlerDescriptor();
 
public:
  int socketNum;
  int conditionSet;
  TaskScheduler::BackgroundHandlerProc* handlerProc;
  void* clientData;
 
private:
  // Descriptors are linked together in a doubly-linked list:
  friend class HandlerSet;
  friend class HandlerIterator;
  HandlerDescriptor* fNextHandler;
  HandlerDescriptor* fPrevHandler;
};
 
class HandlerSet {
public:
  HandlerSet();
  virtual ~HandlerSet();
 
  void assignHandler(int socketNum, int conditionSet, TaskScheduler::BackgroundHandlerProc* handlerProc, void* clientData);
  void clearHandler(int socketNum);
  void moveHandler(int oldSocketNum, int newSocketNum);
 
private:
  HandlerDescriptor* lookupHandler(int socketNum);
 
private:
  friend class HandlerIterator;
  HandlerDescriptor fHandlers;
};
 
class HandlerIterator {
public:
  HandlerIterator(HandlerSet& handlerSet);
  virtual ~HandlerIterator();
 
  HandlerDescriptor* next(); // returns NULL if none
  void reset();
 
private:
  HandlerSet& fOurSet;
  HandlerDescriptor* fNextPtr;
};
 
#endif