#include <stdio.h>
#include <pthread.h>
#include <sys/time.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
//#define BUFFER_SIZE 16
#define BUFFER_SIZE 2
#define OVER ( - 1)
struct prodcons
{
int buffer[BUFFER_SIZE];
pthread_mutex_t lock;
int readpos, writepos;
pthread_cond_t notempty;
pthread_cond_t notfull;
};
struct prodcons buffer;
void init(struct prodcons *b)
{
pthread_mutex_init(&b->lock, NULL);
pthread_cond_init(&b->notempty, NULL);
pthread_cond_init(&b->notfull, NULL);
b->readpos = 0;
b->writepos = 0;
}
void put(struct prodcons *b, int data)
{
pthread_mutex_lock(&b->lock);
if ((b->writepos + 1) % BUFFER_SIZE == b->readpos)
{
pthread_cond_wait(&b->notfull, &b->lock);
}
b->buffer[b->writepos] = data;
b->writepos++;
if (b->writepos >= BUFFER_SIZE)
b->writepos =
