问防止打开应用程序的多个实例的跨平台方法

EN

#include <boost/interprocess/sync/named_mutex.hpp>
#include <iostream>

class MyApplication
{
public:
    MyApplication() = default;

    ~MyApplication()
    {
        if (mLockedByThisInstance)
        {
            boost::interprocess::named_mutex::remove("myApplicationMutex");
        }
    }

    bool IsAlreadyRunning()
    {
        mLockedByThisInstance = mNamedMutex.try_lock();

        if (!mLockedByThisInstance)
        {
            return true;
        }

        return false;
    }

    int Run(int argc, char *argv[])
    {
        // Application main loop            
        return 0;
    }

private:
    bool mLockedByThisInstance = false;
    boost::interprocess::named_mutex mNamedMutex{ boost::interprocess::open_or_create,
        "myApplicationMutex" };
};

int main(int argc, char *argv[])
{
    MyApplication myApplication;

    if (myApplication.IsAlreadyRunning())
    {
        std::cout << "MyApplication is already running!\n";
        return 1;
    }

    return myApplication.Run(argc, argv);
}