CFileEvent.h

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/*
                    GNU GENERAL PUBLIC LICENSE
                       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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*/

// Author:
//   Ron Fox
//   NSCL
//   Michigan State University
//   East Lansing, MI 48824-1321
//   mailto:fox@nscl.msu.edu
//
// Copyright 

#ifndef __CFILEEVENT_H  //Required for current class
#define __CFILEEVENT_H

//
// Include files:
//

                               //Required for base classes
#ifndef __CEVENT_H    
#include "CEvent.h"
#endif

#ifndef __CFDREACTOR_H
#include <CFdReactor.h>
#endif

#ifndef __CFDMONITOR_H
#include <CFdMonitor.h>
#endif


#ifndef __CRTSYS_TYPES_H
#include <sys/types.h>
#define __CRTSYS_TYPES_H
#endif

#ifndef __CRTSYS_STAT_H
#include <sys/stat.h>
#define __CRTSYS_STAT_H
#endif

#ifndef __CRT_FCNTL_H
#include <fcntl.h>
#define __CRT_FCTNL_H
#endif

#ifndef __STL_STRING
#include <string>
#ifndef __STL_STRING
#define __STL_STRING
#endif
#endif


class CFileEvent  : public CEvent        
{
  class CFileEventReactor : public CFdReactor
  {
    CFileEvent& m_rOwner;       
  public:
    CFileEventReactor(const STD(string)& rName, CFileEvent& rOwner);
    ~CFileEventReactor() {}

    virtual void OnReadable(CFdMonitor& rMonitor, int fd);
    virtual void OnWritable(CFdMonitor& rMonitor, int fd);
    virtual void OnException(CFdMonitor& rMonitor, int fd);
    virtual void OnTimeout(CEventMonitor& rMonitor);
    
  }; 
private:

  int                m_nFd;     
  bool               m_fCloseOnDestroy; 

public:
  static int readable;          
  static int writeable;         
  static int exceptions;        
public:
  // Constructors and other cannonical operations:

 
  // Constructors for objects with default object names.

  CFileEvent(int fd, int access=readable); 
  CFileEvent(const char* pName,int flags = O_RDONLY,  int access=readable);
  CFileEvent(const STD(string)& rName,int flags = O_RDONLY,  int access=readable);

  // Constructors for objects with explicit object names (char*)

  CFileEvent(int fd, const char* pObjName,  int access=readable);
  CFileEvent(const char* pObjName, const char* pName, 
             int flags = O_RDONLY, int access=readable);
  CFileEvent(const char* pObjName, const STD(string)& rName, 
             int flags = O_RDONLY, int access=readable);

  // Constructors for objects with explicit object names (STD(string)).

  CFileEvent(int fd, const STD(string)& rObjName, int access=readable);
  CFileEvent(const STD(string)& rObjName, const char* pname,
             int flags = O_RDONLY, int access=readable);
  CFileEvent(const STD(string)& rObjName, const STD(string)& rName,
             int flags = O_RDONLY, int access=readable);
  
  // Destructor:

  ~CFileEvent();

  // Copy construction, assignment and comparison are all illegal:

private:
  CFileEvent(const CFileEvent& rEvent);
  CFileEvent& operator=(const CFileEvent& rhs);
  int operator==(const CFileEvent& rEvent);

public:
// Selectors:

    int getFd() const { return m_nFd;}
    int getCloseOnDestory() const { return m_fCloseOnDestroy;}
public:

// Attribute mutators:

protected:

  // Class operations:

public:
  void MonitorReadable  (bool fReadable = true);
  void MonitorWritable  (bool fWritable = true);
  void MonitorExceptions(bool fExcept   = true);

  virtual void OnReadable(istream& rStream);
  virtual void OnWritable(ostream& rStream);
  virtual void OnException(iostream&     fd);
  virtual void OnTimeout(iostream&   str);

  virtual STD(string) DescribeSelf();
protected:
  void Exit(int status);        // Exit thread now (release mutex).
  void SetupMonitor(int AccessMask);    // Set up the monitor.
  CFdMonitor* CreateMonitor(const char* pFilename,
                            const char* pMonitor,
                            int flags);

};

#endif

---