---

rppointer.h

gehe zur Dokumentation dieser Datei

#ifndef RPPOINTER_H
#define RPPOINTER_H
#include<assert.h>
#include"mseg.h"
#include<sys/types.h>

namespace RAMS
{

 class RPPointer_s
 {
 protected:
    Mseg *seg;
    off_t &off;
 public:
    RPPointer_s(Mseg *s,off_t& o):seg(s),off(o){}
    void init(Mseg *s,off_t& o) { seg=s; off=o; }
    off_t offset() const { return off; }
    
    int ok() { return off < seg->length(); }
    size_t operator-(RPPointer_s a)
        {
            assert(a.seg->begin()==seg->begin());
            return (off-a.off);
        }

    void setoff(off_t o) { off=o; }
    RPPointer_s& cast(const RPPointer_s &anderer)
    {
        seg=anderer.seg;
        off=anderer.off;
        return *this;
    }
    void *operator=(void *p)
    {
      off=(char *)p - (char *)(seg->begin());
      assert(ok());
      return p;
    }
 };
};
#endif

---