appinst.h

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#ifndef APPINST_H_
#define APPINST_H_


#include <string>


#define APPLOCK_BASEDIR "/var/run"



class AppInstException
{
public:

  AppInstException(int iErr) : m_iErr(iErr) {}
  

  inline int GetErrorNumber() const
  {
    return m_iErr;
  }
  
private:
  int m_iErr; 
    
};


class AppInstance
{
public:

  AppInstance(const std::string& rName, const std::string& rBase = APPLOCK_BASEDIR);
  
  ~AppInstance();
  

  bool Lock();
  

  void Unlock();
  

  bool Exists() const;
  

  bool SendSignal(int iSigNo) const;
  

  inline bool Terminate() const
  {
    return SendSignal(SIGTERM);
  }
  
protected:
  bool DoLock();
  
private:
  std::string m_path; 
  bool m_fLocked;     
};

#endif /*APPINST_H_*/