helloworld_pthread_example.cpp

/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */

#include <proton/connection.hpp>
#include <proton/container.hpp>
#include <proton/delivery.hpp>
#include <proton/message.hpp>
#include <proton/messaging_handler.hpp>
#include <proton/tracker.hpp>

#include <iostream>

#include "fake_cpp11.hpp"

#include <pthread.h>

const std::string conn_url_glob="//127.0.0.1:5672";
const std::string addr_glob="examples";

class hello_world : public proton::messaging_handler {
    std::string conn_url_;
    std::string addr_;

  public:
    hello_world(const std::string& u, const std::string& a) :
        conn_url_(u), addr_(a) {}

    void on_container_start(proton::container& c) OVERRIDE {
        std::cout<<"on_container_start"<<std::endl;
        c.connect(conn_url_);
    }

    void on_connection_open(proton::connection& c) OVERRIDE {
        c.open_receiver(addr_);
        c.open_sender(addr_);
    }

    void on_sendable(proton::sender &s) OVERRIDE {
        std::cout<<"on_sendable"<<std::endl;

        proton::message m("Hello World!");
        s.send(m);
        s.close();
    }

    void on_message(proton::delivery &d, proton::message &m) OVERRIDE {
        std::cout << m.body() << std::endl;
        d.connection().close();
    }
};

void *pthread_callback(void *a) {
    std::cout<<"c1 "<<"- URL: "<<conn_url_glob<<" - QUEUE NAME: "<<addr_glob<<std::endl;

    try {
        hello_world hw(conn_url_glob,addr_glob);
        proton::container(hw).run();
    } catch (const std::exception& e) {
        std::cerr << e.what() << std::endl;
    }

    pthread_exit(NULL);
}

int main(int argc, char **argv) {
    pthread_t tid1;

    try {
        // This does work (no additional thread is created)
        //pthread_callback(NULL);

        // This does not work!
        pthread_create(&tid1,NULL,pthread_callback,NULL);

        return 0;
    } catch (const std::exception& e) {
        std::cerr << e.what() << std::endl;
    }

    pthread_join(tid1,NULL);

    return 1;
}