操作系统生产者消费者

#include <stdio.h>
#include <pthread.h>
#include <windows.h>
#include<process.h>
#include <semaphore.h>
#define N 50
#define proNum  10     ///生产者数量
#define conNum  5      ///消费者数量
#define sleepTime 5
/*
初始化
int sem_init (sem_t *sem, int pshared, unsigned int value);

激活：
int sem_post(sem_t *sem);

等待：
int sem_wait(sem_t * sem);
*/


int buffer[N] = {0};
int in = 0;
int out = 0;
int id = 0;
sem_t mutex , empty ,full;

/////////////////////生产者//////////////////////////////
void  *producer(void * )
{
    while(1)
    {
          sem_wait(&empty);         ///p(wait)
          sem_wait(&mutex);         ///p (mutex)
          id++;                     ///确定id
          printf("productID%d,position%d\n",id,in);
          buffer[in] = id;
          in = (in + 1) % N;
          sem_post(&mutex);        ///V(mutex)
          sem_post(&full);         ///V(full)
          Sleep(sleepTime);
    }
}
void  *consumer( void *)
{
    while(1)
    {
        sem_wait(&full);          ///p(full)
        sem_wait(&mutex);         ///p (mutex)
        int nextc = buffer[out];
        buffer[out] = 0;
        out = (out + 1) % N;
        sem_post(&mutex);         ///V(mutex)
        sem_post(&empty);         ///V(empty)

        printf("consumeID%d,position%d\n", nextc,out);
        Sleep(sleepTime);
    }
}
int main()
{
      sem_init(&mutex,0,1);
      sem_init(&empty,0,N);
     sem_init(&full,0,1);
    pthread_t threadPool[proNum+conNum];
    int i;
    for(i = 0; i < proNum; i++)
    {
        pthread_t temp;
        if(pthread_create(&temp, NULL, producer, NULL) == -1)
        {

            exit(1);
        }
        threadPool[i] = temp;
    }///创建生产者


    for(i = 0; i < conNum; i++)
    {
        pthread_t temp;
        if(pthread_create(&temp, NULL, consumer, NULL) == -1)
        {
            exit(1);
        }
        threadPool[i+proNum] = temp;
    }///创建消费者


    void * result;
    for(i = 0; i < proNum+conNum; i++)
    {
        if(pthread_join(threadPool[i], &result) == -1)
        {
            exit(1);
        }
    }
    return 0;
}