C++ (Cpp) UMF_MESSAGE::SetLength示例

// Regional Manager has a credit queue to send back flowcontrol credits??
void FLOWCONTROL_LI_CHANNEL_IN_CLASS::freeCredits(UINT32 serviceID)
{
    if(SWITCH_DEBUG)
    {
      cout << "Channel " << serviceID << "Freeing credits: local: " << flowcontrolCredits << " regional: " << 
              regionalFlowcontrol->GetRegionalCredits() << " returnThreshold: " << regionalReturnThreshold << endl;
    }

    if(((flowcontrolCredits > 0) && (regionalFlowcontrol->GetRegionalCredits() > regionalReturnThreshold)) ||
       (flowcontrolCredits > regionalReturnThreshold / 2))
    {
        if(SWITCH_DEBUG)
        {
	    cout << "Channel " << serviceID  << " sending back credits " <<  flowcontrolCredits << endl;
	}

        UMF_MESSAGE outMesg = factory->createUMFMessage();
        outMesg->SetLength(sizeof(UMF_CHUNK));
        outMesg->SetServiceID(flowcontrolChannelID);

        // Atomic read returns the old value, making this operation thread safe under idempotence.
        UINT32 creditsToReturn = flowcontrolCredits.fetch_and_store(0);
        UINT32 phyPvt =  (serviceID * 2 * MULTIFPGA_FIFO_SIZES) | creditsToReturn;  
         
        if(SWITCH_DEBUG)
        {
   	    cout << "Setting phy pvt to " << hex << phyPvt << dec <<endl;
	}
        outMesg->AppendChunk((UINT128) phyPvt);              
        regionalFlowcontrol->FreeRegionalCredits(creditsToReturn);
        flowcontrolQ->push(outMesg);
    }
}