#include <pthread.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>



static int nthreads = 10;
static int init_count = 0;
pthread_mutex_t init_lock;
pthread_cond_t init_cond;
pthread_t threads[10];

void*  func(void* p)
{
    pthread_mutex_lock(&init_lock);
    init_count++;
    pthread_cond_signal(&init_cond);
    pthread_mutex_unlock(&init_lock);


    return NULL;
}



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

    switch(fork()) {
    case 0:
        break;
    case -1:
        perror("perror");
        exit(0);
    default:
        exit(0);
    }

    pthread_mutex_init(&init_lock, NULL);
    pthread_cond_init(&init_cond, NULL);
    int i;
    for(i = 0; i < nthreads; ++i)
    {
        pthread_create(&threads[i], NULL, func, NULL);
    }

    pthread_mutex_lock(&init_lock);
    while (init_count < nthreads)
    {
        pthread_cond_wait(&init_cond, &init_lock);
    }
    pthread_mutex_unlock(&init_lock);
    return 0;
}