#ifndef __Select_h
#define __Select_h
#ifdef __GNUG__
#pragma interface
#endif

class ostream;

class SelectPoll {
  friend class SelectEvent;
  SelectPoll *next;
  SelectEvent *head;
  int fd;
public:
  SelectPoll(SelectEvent *p) { head = p; fd = -1; }
  void disarm();
  void arm(int f);
  virtual ~SelectPoll() { disarm(); }
  virtual void handler() = 0;
  static int getevent(unsigned);
  static int poll(unsigned);
  static SelectEvent SelectRead, SelectWrite, SelectStat;
};

class SelectEvent {
  friend int SelectPoll::poll(unsigned);
  bool modified;
  short setsize;
  void *fds;	// really fd_set, but we don't want to require select.h here
  SelectPoll *q;
  void setall();
public:
  SelectEvent(int = 256);
  ~SelectEvent();
  void handler();
  int tst(int i) const;
  void set(int i);
  void clr(int i);
  void add(SelectPoll &r);
  void del(SelectPoll &r);
  void printon(ostream &);
};
#endif