JSystem/JTime.hh

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#ifndef __JSYSTEM__JTIME__
#define __JSYSTEM__JTIME__
 
#include <time.h>
#include <sys/time.h>
 
 
/**
 * \file
 * System time information.
 * \author mdejong
 */
namespace JSYSTEM {}
namespace JPP { using namespace JSYSTEM; }
 
namespace JSYSTEM {
 
  /**
   * Type definition of local time.
   */
  typedef long long int  localtime_t;
 
  
  /**
   * Auxililary class to local get time in micro seconds.
   */
  struct JLocalTime {
    /**
     * Default constructor.
     */
    JLocalTime()
    {}
 
 
    /**
     * Get local time in micro seconds.
     *
     * \return         time [us]
     */
    localtime_t operator()() const
    {
      gettimeofday(&t, &tz);
      
      usec  = t.tv_sec;
      usec *= 1000000ULL;
      usec += t.tv_usec;
      
      return usec;
    }
    
  private:
    mutable localtime_t     usec;
    mutable struct timeval  t;
    mutable struct timezone tz;
  };
 
 
  /**
   * Function object to get local time in micro seconds.
   */
  static const JLocalTime getLocalTime;
}
 
#endif