#include <iostream>

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string>

pthread_mutex_t print_mtx;

class IThread
{
    public:

    private:

    virtual void* _run() = 0;

    static void* _staticRun(void* context)
    {
        return static_cast<IThread*>(context)->_run();
    }
};



void printer(std::string a)
{
    pthread_mutex_lock(&print_mtx);

    std::cout << a << std::endl;

    pthread_mutex_unlock(&print_mtx);
}

void* foo(void* arg)
{
    unsigned int i = 100;
    for(;i >  0; i--){
        std::string a = "foo cnt: ";
        a += std::to_string(i);
        printer(a);
        sleep(1);
    }

}

void* baa(void* arg)
{
    unsigned int i = 5;
    
    for(;i >  0; i--){
        std::string a = "baa cnt: ";
        a += std::to_string(i);
        printer(a);
        sleep(10);
    }
}

int main()
{
    pthread_t foo_th, baa_th;
    

    pthread_mutex_init(&print_mtx, NULL);

    pthread_create(&foo_th, NULL, foo, NULL);
    pthread_create(&baa_th, NULL, baa, NULL);


    pthread_join(foo_th, NULL);
    pthread_join(baa_th, NULL);
    
    
    return 0;
}