[Boost-users] directory monitoring with dynamically added dirs

Subject: [Boost-users] directory monitoring with dynamically added dirs
From: Richard Langly (richard.ringo.langly_at_[hidden])
Date: 2013-05-14 19:42:12

I'm trying to dynamically add directories from a config file before I enter
my programs main loop using the ASIO dir monitor example. I've not been
able to understand the internals yet. Below is my current iteration of what
I'm trying. I have been able to get the simple examples running just like
in the async.cpp file. But I can't get adding dirs dynamically working and
was hoping someone could offer suggestions.

Any help much appreciated.

void my_file_handler(const boost::system::error_code &ec,
    const boost::asio::dir_monitor_event &ev)
{
    // event stuff ...

    return;
}

    boost::asio::dir_monitor *dm;
    boost::asio::io_service io_service;
    vector<boost::asio::dir_monitor *> vecdm;

    for (vector<Directories>::iterator it = dirs->begin();
            it != dirs->end(); ++it) {
        dm = new boost::asio::dir_monitor(io_service);
        dm->add_directory((*it).abs_dir_path);

        vecdm.push_back(dm);
    }

    boost::thread t =
        boost::thread(boost::bind(&boost::asio::io_service::run,
            boost::ref(io_service)));

    while (true) {
        // MAIN PROGRAM LOOP

        for (vector<boost::asio::dir_monitor *>::iterator it =
            vecdm.begin(); it != vecdm.end(); ++it) {

            (*it)->async_monitor(my_file_handler);
        }

        io_service.reset();

        // DO PROGRAM STUFF ...
    }
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