//
//  main.c
//  TestVlad
//
//  Created by Efraim Budusan on 30/05/16.
//  Copyright © 2016 Efraim Budusan. All rights reserved.
//

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

char text[500];
int charToRemove = 0;
int n;



pthread_mutex_t eliminate= PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t mutexes[100];

void * popThread( void * arg)
{
    int i = (int)(size_t)arg;
    while (1) {

        pthread_mutex_lock(&eliminate);
        memmove(text, text+1, strlen(text));
        pthread_mutex_unlock(&eliminate);
        printf("%s \n",text);
        pthread_mutex_lock(&mutexes[i]);

    }
    return NULL;
}


void * generatorThread()
{
    while(1)
    {
        charToRemove = rand() % strlen(text);
        for (int i=0;i<n;i++) {
            pthread_mutex_unlock(&mutexes[i]);
        }
        sleep(2);
    }
    return NULL;
}

int main(int argc, const char * argv[]) {
    // insert code here...

    srand(time(0));
    printf("Enter the text:");
    fgets(text, sizeof(text), stdin);

    printf("Enter the no of threads:");
    scanf("%d",&n);

    pthread_t th[n];
    pthread_t gThread;
    pthread_create(&gThread, NULL, &generatorThread  , NULL);
    for (int i=1;i<=n;i++)
    {
        pthread_mutex_init(&mutexes[i],NULL);
        pthread_mutex_unlock(&mutexes[i]);
        pthread_create(&th[i], NULL, &popThread, (void*)(size_t)i );
    }

    pthread_join(gThread , NULL);
    for (int i=1;i<=n;i++)
    {
        pthread_join(th[i] , NULL);
    }

    return 0;
}