//-----------------------------------------------------------------------------
// nulo.h
//-----------------------------------------------------------------------------

#include <boost/fiber/fiber.hpp>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

//-----------------------------------------------------------------------------

#define check(code) docheck(code, __FILE__, __LINE__)

int docheck(int error, const char *file, int line)
{
    if (error == -1)
    {
        std::cerr << file << ":" << line << ": " << strerror(errno)
                  << std::endl;
        exit(EXIT_FAILURE);
    }
    return error;
}

//-----------------------------------------------------------------------------

void usuario()
{
    boost::fibers::fiber t([] {});
    t.join();
}

void nucleo()
{
    std::thread t([] {});
    t.join();
}

void proceso()
{
    switch (check(fork()))
    {
        case 0: check(execl("nulo", "nulo", nullptr)); break;
        default: wait(nullptr); break;
    }
}

//-----------------------------------------------------------------------------