sem.hpp

/* sem.hpp */
/* $Id$ */
#ifndef __sem_hpp
#define __sem_hpp

#ifdef GE_BUILD
#include <types.hpp>
#else
#include <dcf/types.hpp>
#endif

namespace dcf
{
  class Sem
  {
  public:
    
    Sem(int /*res_num*/) {};
    
    virtual ~Sem() {};
    
    virtual dcf::error_t allocate(int rn) = 0;
    
    virtual dcf::error_t release(int rn) = 0;
    
    virtual dcf::error_t available(int &rn) const = 0;
    
    dcf::error_t operator--() { return allocate(1); }
    
    dcf::error_t operator++() { return release(1); }
    
  protected:
  };
};

#endif /* sem.hpp */