c++ - Omnet++:作为复合模块的子模块调用时找不到类

Question

我正在创建一个简单的 omnet++ 模拟。该模拟的一部分使用了一个名为数据包生成器的简单模块。它将成为名为 complete 的项目内复合模块的一部分。但是，当我尝试在复合模块中使用 packetGenerator 时，在尝试运行模拟时收到以下错误消息:

Error in module (omnetpp::cModule) net.tx (id=2) during network setup: Class "packetGenerator" not found -- perhaps its code was not linked in, or the class wasn't registered with Register_Class(), or in the case of modules and channels, with Define_Module()/Define_Channel().

是的，我进入了属性-->项目引用并引用了packetGenerator项目(如图所示)。我还调用了 Define_Module(packetGenerator)，如 packetGenerator.cc

中所示

我推断问题发生在复合模块的子模块部分，但我不知道如何解决这个问题。如有任何帮助，我们将不胜感激。如果我省略了 TransmitterNode 复合模块中的 packetGenerator 子模块，那么模拟将运行良好(并且不执行任何操作，因为还没有任何功能)。 p>

packetGenerator.cc(在项目packetGenerator内)

#include <stdio.h>
#include <string.h>
#include <omnetpp.h>
#include <AppMessage_m.h>
using namespace omnetpp;

//Simple module responsible for continuously generating AppMessage messages
class packetGenerator: public cSimpleModule {

  private:
    cMessage* event;
    int seqno;
    int senderId;

  public:
    packetGenerator();
    virtual ~packetGenerator();

  protected:

    virtual void initialize() override;

    virtual void handleMessage(cMessage *msg) override;

    virtual AppMessage* generateMessage();
};

Define_Module(packetGenerator);

packetGenerator::packetGenerator() {
    event = nullptr;
    seqno = 0;
}

packetGenerator::~packetGenerator() {
    cancelAndDelete(event);
}

void packetGenerator::initialize() {

    senderId = par("nodeIdentifier");
    event = new cMessage("event");
    scheduleAt(0.0, event);
}

void packetGenerator::handleMessage(cMessage* msg) {

    WATCH(seqno);

    //Go here when the new message is scheduled to be sent (after the delay)
    if (msg == event) {
        send(generateMessage(), "out");
        simtime_t delay = par("iatDistribution");
        scheduleAt(simTime() + delay, event);
    }

    //If we receive a message that isn't our timer-expiry message (e.g. from the MAC), go here
    else {
        AppMessage* appmsg = check_and_cast<AppMessage*>(msg);
        EV << "Message received" << endl;
        EV << "Message kind: " << msg->getKind() << endl;
        delete appmsg;
    }

}

AppMessage* packetGenerator::generateMessage() {


    simtime_t timeStamp = simTime();
    int sequenceNumber = seqno;
    seqno++;
    int msgSize = par("messageSize");

    char messageName[30];
    sprintf(messageName, "Message from %d", senderId);

    AppMessage* msg = new AppMessage(messageName);
    msg->setTimeStamp(timeStamp);
    msg->setSenderId(senderId);
    msg->setSequenceNumber(sequenceNumber);
    msg->setMsgSize(msgSize);

    return msg;
}

net.ned(在项目内完成)

package complete;
import packetgenerator.packetGenerator;

module TransmitterNode
{
    parameters:
        int nodeIdentifier; //These need to be unique in the simulation
        double nodeXPosition;
        double nodeYPosition;
        @display("bgb=468,188;i=device/cellphone");
    gates:
    submodules:      
        packetGenerator: packetGenerator {
            @display("p=79,90;i=block/source");
        }
    connections:
}

network net
{
    submodules:
        tx: TransmitterNode;
    connections:
}

Answer 1

项目 packetGenerator 必须构建为共享库，并选中 Project 中的复选框为其他项目导出此共享/静态库 | 属性 | OMNeT++ | | 鸟神星 |选择根目录或 src 目录 | 选项... | 目标。