interruptablestackthread.cxx

一个著名的SIP协议栈

#include "resip/stack/InterruptableStackThread.hxx"
#include "resip/stack/SipStack.hxx"
#include "resip/stack/SipMessage.hxx"
#include "resip/stack/SelectInterruptor.hxx"
#include "rutil/Logger.hxx"

#define RESIPROCATE_SUBSYSTEM Subsystem::SIP

using namespace resip;

InterruptableStackThread::InterruptableStackThread(SipStack& stack, SelectInterruptor& si)
   : mStack(stack),
     mSelectInterruptor(si)
{}

InterruptableStackThread::~InterruptableStackThread()
{
   //InfoLog (<< "InterruptableStackThread::~InterruptableStackThread()");
}

void
InterruptableStackThread::thread()
{
   while (!isShutdown())
   {
      try
      {
         FdSet fdset;
         mStack.process(fdset); // .dcm. reqd to get send requests queued at transports
         mSelectInterruptor.buildFdSet(fdset);
         mStack.buildFdSet(fdset);
         int ret = fdset.selectMilliSeconds(resipMin(mStack.getTimeTillNextProcessMS(), 
                                                     getTimeTillNextProcessMS()));
         if (ret >= 0)
         {
            // .dlb. use return value to peak at the message to see if it is a
            // shutdown, and call shutdown if it is
            // .dcm. how will this interact w/ TuSelector?
            mSelectInterruptor.process(fdset);
            mStack.process(fdset);
         }
      }
      catch (BaseException& e)
      {
         InfoLog (<< "Unhandled exception: " << e);
      }
   }
   InfoLog (<< "Shutting down stack thread");
}

void
InterruptableStackThread::shutdown()
{
   ThreadIf::shutdown();
   mSelectInterruptor.interrupt();
}

void
InterruptableStackThread::buildFdSet(FdSet& fdset)
{}

unsigned int
InterruptableStackThread::getTimeTillNextProcessMS() const
{
   //.dcm. --- eventually make infinite
   return 10000;   
}

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