//-----------------------------------------------------------------------------
// signal-wait.h
//-----------------------------------------------------------------------------

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

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

void usuario()
{
    signal(SIGUSR1, SIG_IGN);
    boost::fibers::fiber t([]
    {
        raise(SIGUSR1);
    });
    t.join();
}

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

void nucleo()
{
    pthread_t parent = pthread_self();
    signal(SIGUSR1, SIG_IGN);
    std::thread t([&]
    {
        pthread_kill(parent, SIGUSR1);
    });
    t.join();
}

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

void proceso()
{
    pid_t parent = getpid();
    if (fork())
    {
        signal(SIGUSR1, SIG_IGN);
        wait(nullptr);
    }
    else
    {
        kill(parent, SIGUSR1);
        exit(0);
    }
}

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