aaa_route_id_generator.h

Diameter协议栈

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/* Open Diameter: Open-source software for the Diameter and               */
/*                Diameter related protocols                              */
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#ifndef __ROUTE_ID_GENERATOR_H__
#define __ROUTE_ID_GENERATOR_H__

#include <time.h>
#include <stdlib.h>
#include "ace/Singleton.h"

class AAA_IdGenerator {
    public:
       virtual int Get() = 0;

    protected:
       AAA_IdGenerator() : m_Id(0) { }
       virtual ~AAA_IdGenerator() { }
       int m_Id;
};

class AAA_HopByHopGenerator : public AAA_IdGenerator {
    public:
       int Get() {
           if (m_Id == 0) {
#ifndef WIN32
               struct timeval tv;
               gettimeofday(&tv, 0);
               srand((unsigned int)(tv.tv_sec + tv.tv_usec));
#else
			   srand((unsigned int)time(0));
#endif
               m_Id = rand(); // random number seed
           }
           return (++m_Id);
       }
};

class AAA_EndToEndGenerator : public AAA_IdGenerator {
    public:
       int Get() {
           if (m_Id == 0) {
#ifndef WIN32
               struct timeval tv;
               gettimeofday(&tv, 0);
               srand((unsigned int)(tv.tv_sec + tv.tv_usec));
               m_Id = (unsigned int)(tv.tv_sec) << 20; // set high 12 bit
#else
			   srand((unsigned int)time(0));
               m_Id = (unsigned int)(rand()) << 20; // set high 12 bit
#endif
           }
           m_Id &= 0xFFF00000; // clear lower 20 bits
           m_Id |= rand() & 0x000FFFFF; // set low 20 bits
           return (m_Id);
       }
};

typedef ACE_Singleton<AAA_HopByHopGenerator, ACE_Recursive_Thread_Mutex>
                      AAA_HopByHopGenerator_S;
#define AAA_HOPBYHOP_GEN() AAA_HopByHopGenerator_S::instance()

typedef ACE_Singleton<AAA_EndToEndGenerator, ACE_Recursive_Thread_Mutex>
                      AAA_EndToEndGenerator_S;
#define AAA_ENDTOEND_GEN() AAA_EndToEndGenerator_S::instance()

#endif