checkpnt.h

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#ifndef checkpoint_h
#define checkpoint_h
 
#define CKPT(arg1, arg2)   \
    if (!arg1.xdr(arg2)) { \
        return false;      \
    }
 
class Checkpoint {
  public:
    Checkpoint();
    virtual ~Checkpoint();
 
    static Checkpoint* instance();
 
    bool out();  // true means to file, false means from file
    bool xdr(long&);
    bool xdr(Object*&);
};
 
#endif