#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
pthread_mutex_t mutex;
pthread_mutex_t action_mutex;
pthread_mutexattr_t mta;
pthread_attr_t tattr1;
pthread_attr_t tattr2;
struct sched_param parm1;
struct sched_param parm2;
void *easy2(void *param1);
void *easy3(void *param1);
int main(int argc, char **argv)
{
    pthread_t threadid;
    int err;
    if((err=pthread_mutex_init(&action_mutex,NULL))!=0)
    {
	perror("error");
	exit(1);	
    }
    err = pthread_attr_init(&tattr1);
    err = pthread_attr_init(&tattr2);
    err  = pthread_attr_setschedpolicy(&tattr1, SCHED_FIFO);
    err  = pthread_attr_setschedpolicy(&tattr2, SCHED_FIFO);
    memset(&parm1,0,sizeof(parm1));
    memset(&parm2,0,sizeof(parm2));
    parm1.sched_priority=8;
    parm2.sched_priority=10;
    
    pthread_attr_setschedparam(&tattr1,&parm1);    
    pthread_attr_setschedparam(&tattr2,&parm2);    
    pthread_create(&threadid,&tattr1,easy2,NULL);		    
    pthread_create(&threadid,&tattr2,easy3,NULL);		    
    while(1)
    {
	usleep(100000);
    }
    return(0);
}
void *easy2(void *param1)
{
    printf("Starting thread 2:\n");
    while(1)
    {
	pthread_mutex_lock(&action_mutex);
	printf("After lock 2\n");
	sleep(2);
        pthread_mutex_unlock(&action_mutex);
//	sleep(1);
    }
    return(NULL);    
}
void *easy3(void *param1)
{
    printf("Starting thread 3:\n");
    while(1)
    {
	pthread_mutex_lock(&action_mutex);
	printf("After lock  3\n");
	sleep(3);
        pthread_mutex_unlock(&action_mutex);
//        sleep(2);
    }
    return(NULL);    
}