C++ Time::FN方法代码示例

void Clock::clockSet(const Time& when)
{
	ScopedLock lock(mLock);
	mBaseTime = Timeval(0);
	mBaseFN = when.FN();
	isValid = true;
}

void Clock::set(const Time& when)
{
	mLock.lock();
	mBaseTime = Timeval(0);
	mBaseFN = when.FN();
	mLock.unlock();
}

void PDCHL1Downlink::bugFixIdleFrame()
{
	// DEBUG: We are only using this function to fix this problem for now.
	if (gFixIdleFrame) {
		// For this debug purpose, the mssage is sent on the next frame
		// TODO: debug purpose only! This only works for one channel!
		//Time tnext(gBSNNext.FN());
		//gBTS.clock().wait(tnext);
	}

	// Did we make it in time?
	{
	Time tnow = gBTS.time();
	int fn = tnow.FN();
	int mfn = (fn / 13);			// how many 13-multiframes
	int rem = (fn - (mfn*13));	// how many blocks within the last multiframe.
	int tbsn = mfn * 3 + ((rem==12) ? 2 : (rem/4));
	GPRSLOG(2) <<"idleframe"<<LOGVAR(fn)<<LOGVAR(tbsn)<<LOGVAR(rem);
	}

	/***
	if (mchIdleFrame.size() == 0) {
		RLCMsgPacketDownlinkDummyControlBlock *dummymsg = new RLCMsgPacketDownlinkDummyControlBlock();
		mchIdleFrame.set(BitVector(RLCBlockSizeInBits[ChannelCodingCS1]));
		dummymsg->write(mchIdleFrame);
		delete dummymsg;
	}
	send1Frame(mchIdleFrame,ChannelCodingCS1,true);
	***/
}

void Clock::wait(const Time& when) const
{
	int32_t now = FN();
	int32_t target = when.FN();
	int32_t delta = FNDelta(target,now);
	if (delta<1) return;
	static const int32_t maxSleep = 51*26;
	if (delta>maxSleep) delta=maxSleep;
	sleepFrames(delta);
}

// Return true if the CCCH frame was used.
bool CCCHLogicalChannel::processRaches()
{
	while (RachInfo *rach = gRachq.readNoBlock())
	{
		Time now = gBTS.time();
		int age = now - rach->mWhen;	// The result is number of frames and could be negative.
		if (age>sMaxAge) {
			LOG(WARNING) << "ignoring RACH burst with age " << age;
			if (rach->mChan) {
				LOG(INFO) << "BTS congestion: unable to process RACH for pre-allocated channel within expiration time";
				rach->mChan->l2sendp(L3_HARDRELEASE_REQUEST);	// (pat) added 9-6-2013
			}
			delete rach;
			continue;	// Did not use the CCCH frame yet.
		}


		ChannelType chtype = decodeChannelNeeded(rach->mRA);
		LOG(DEBUG) <<LOGVAR(*rach) <<LOGVAR(chtype) <<LOGVAR(mCcchGroup);

		if (chtype == PSingleBlock1PhaseType || chtype == PSingleBlock2PhaseType) {
			assert(rach->mChan == NULL);
			if (0 == gConfig.getNum("GPRS.Enable")) {
				// GPRS service request when the beacon advertises no beacon support.
				// This was a spurious RACH message or a stupid handset.  Ignore it.
				assert(rach->mChan == NULL);
				delete rach;
				continue;
			}
			// Regardless of the type of GPRS request, we will send a single-block uplink,
			// which the MS will (most likely) use to send us a PacketResourceRequest.
			// First request a single-block reservation from GPRS.  If GPRS resources are busy,
			// this will return NULL and we will send reject the RACH.
			L3ImmediateAssignment *iap = GPRS::makeSingleBlockImmediateAssign(rach, mCcchNextWriteTime.FN() + 4);
			if (iap) {
				L2LogicalChannelBase::l2sendm(*iap,L3_UNIT_DATA);
				delete iap;
				delete rach;
			} else {
			}
			return true;	// We processed this rach and used the CCCH, one way or another.
		}

//		L2LogicalChannel *LCH;
//		if (chtype == TCHFType) {
//			// FIXME: This blocks at L2LAPDm::sendIdle!
//			LCH = gBTS.getTCH();
//		} else if (chtype == SDCCHType) {
//			// We may reserve some SDCCH for CC and SMS.
//			if (requestingLUR(rach->mRA)) {
//				int SDCCHAvailable = gBTS.SDCCHAvailable();
//				int SDCCHReserve = gConfig.getNum("GSM.Channels.SDCCHReserve");
//				if (requestingLUR(rach->mRA) && SDCCHAvailable <= SDCCHReserve) {
//					// (pat 2-2014) Changed this message and downgraded from CRIT.
//					LOG(CRIT) << "LUR [Location Update Request] congestion, insufficient "<<LOGVAR(SDCCHAvailable) << " <= " <<LOGVAR(SDCCHReserve);
//					goto failure;
//				}
//			}
//
//			LCH = gBTS.getSDCCH();
//		} else {
//			LOG(NOTICE) << "RACH burst for unsupported service RA=" << rach->mRA;
//			LCH = gBTS.getSDCCH();	// Try anyway.
//		}
//
//
//		// Nothing available?
//		if (!LCH) {
//			failure:
#if 0
//			return false;
#endif
//		}

		if (! rach->mChan) {
			delete rach;
			continue;
		}

		// Success.  Send an ImmediateAssignment.
		int initialTA = rach->initialTA();
		assert(initialTA >= 0 && initialTA <= 62);	// enforced by AccessGrantResponder.
		//LCH->l1InitPhy(rach->RSSI(),initialTA,gBTS.clock().systime(rach->mWhen.FN()));
		gReports.incr("OpenBTS.GSM.RR.RACH.TA.Accepted",(int)(initialTA));
		L2LogicalChannel *LCH = rach->mChan;

		// TODO: Update T3101.

		L3ImmediateAssignment assign(
			L3RequestReference(rach->mRA,rach->mWhen),
			LCH->channelDescription(),
			L3TimingAdvance(initialTA)
		);
		//assign.setStartFrame(rach->mReadyTime.FN() + 104);

		if (0) {	// This was for debugging.  Adding this delay made the layer1 connection reliable.
			// Delay the channel assignment until the SACCH is known to be transmitting...
			Time sacchStart = LCH->getSACCH()->getNextWriteTime();
			now = gBTS.time();	// Must update this because getTCH blocked.
//.........这里部分代码省略.........