pthreadornegi.c

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

pthread_mutex_tmutex=PTHREAD_MUTEX_INITILIZER;

intshared_data=1;

void *consumer(void* arg) {

    for(intI =0; I < 30 ; I ++ ){

        pthread_mutex_lock( &mutex);

        shared_data–; /* Critical Section. */

        pthread_mutex_unlock( &mutex);

   }

   printf(“Returning from Comsumer=%d\n”, shared_data);

}

void main() {

   pthread_tthread_id;

   pthread_create( & thread_id, NULL, consumer, NULL );

   for(intI =0; I < 30 ; I ++ ){

         pthread_mutex_lock( &mutex);

         shared_data++; /* Producer Critical Section. */

         pthread_mutex_unlock( &mutex);

   } /*pthread_exit(0); /* Return from main thread. */

   printf(“End of main =%d\n”, shared_data);

}