testtimer.cxx

这是国外的resip协议栈

#include <iostream>
#include "resip/stack/TransactionMessage.hxx"
#include "resip/stack/TimerQueue.hxx"
#include "resip/stack/TuSelector.hxx"
#include "rutil/Fifo.hxx"
#include "rutil/TimeLimitFifo.hxx"
#ifdef WIN32
#include <io.h>
#else
#include <unistd.h>
#endif

#ifdef WIN32
#define usleep(x) Sleep(x/1000)
#define sleep(x) Sleep(x*1000)
#endif

using namespace resip;
using namespace std;

bool
isNear(int value, int reference, int epsilon=250)
{
   int diff = ::abs(value-reference);
   return (diff < epsilon);
}


int
main()
{

   TimeLimitFifo<Message> f(0, 0);
   Fifo<TransactionMessage> r;
   
   TimerQueue timer(r);
   TimeLimitTimerQueue timer2(f);

   cerr << "Before Fifo size: " << f.size() << endl;
   assert(f.size() == 0);
   cerr << "next timer = " << timer.msTillNextTimer() << endl;
   assert(timer.msTillNextTimer() == INT_MAX);

   // throw a few events in the queue
   timer.add(Timer::TimerA, "first", 1000);
   cerr << "next timer will fire in " << timer.msTillNextTimer() << "ms" << endl;
   assert(isNear(timer.msTillNextTimer(), 1000));
   timer.add(Timer::TimerA, "second", 2000);
   assert(isNear(timer.msTillNextTimer(), 1000));
   timer.add(Timer::TimerA, "third", 4000);
   assert(isNear(timer.msTillNextTimer(), 1000));
   timer.add(Timer::TimerA, "fourth", 8000);
   assert(isNear(timer.msTillNextTimer(), 1000));
   timer.add(Timer::TimerA, "fifth", 16000);
   assert(isNear(timer.msTillNextTimer(), 1000));

   cerr << timer;
   assert(r.size() == 0);
   assert(timer.size() == 5);
   
   timer.process();

   assert(r.size() == 0);
   assert(timer.size() == 5);

   cerr << timer;
   sleep(1);
   cerr << timer;
   timer.process();
   
   cerr << timer;
   assert(r.size() == 1);
   assert(timer.size() == 4);


   cerr << "next timer will fire in " << timer.msTillNextTimer() << "ms" << endl;
   timer.process();
   cerr << "next timer will fire in " << timer.msTillNextTimer() << "ms" << endl;
   cerr << "timer queue size=" << timer.size() << endl;
   cerr << "fired event queue size=" << r.size() << endl;
   assert(r.size() == 1);
   timer.process();   
   assert(r.size() == 1);

   sleep(1);
   timer.process();
   assert(r.size() == 2);
   timer.process();   
   assert(r.size() == 2);

   sleep(2);
   timer.process();
   assert(r.size() == 3);
   timer.process();   
   assert(r.size() == 3);

   sleep(4);
   timer.process();
   assert(r.size() == 4);
   timer.process();   
   assert(r.size() == 4);


   cerr << "next timer will fire in " << timer.msTillNextTimer() << "ms" << endl;
   assert(isNear(timer.msTillNextTimer(), 8000));

   sleep(8);
   timer.process();
   cerr << timer;
   
   assert(r.size() == 5);
   timer.process();   
   assert(r.size() == 5);

   sleep(1);
   timer.process();
   assert(r.size() == 5);
   timer.process();   
   assert(r.size() == 5);

   cerr << "All OK" << endl;
   return 0;
}

/* ====================================================================
 * The Vovida Software License, Version 1.0 
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