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

pthread_mutex_t our_mutex = PTHREAD_MUTEX_INITIALIZER;

void* thread_function(void* input){
	puts("Thread:  Starting the thread and acquiring the lock");
	pthread_mutex_lock(&our_mutex);
	puts("Thread:  We've got the lock now!");
	sleep(1);
	pthread_mutex_unlock(&our_mutex);
	puts("We've released the lock and are finished");

}

void main(){
	pthread_mutex_lock(&our_mutex);
	pthread_t t;
	pthread_create(&t, 0, thread_function, 0);
	puts("Thread is created, but the lock is held by main right now");	
	sleep(5);
	puts("About to release the lock");
	pthread_mutex_unlock(&our_mutex);
	pthread_join(t, 0);
}