生产者消费者问题c++代码

以下是一个简单的生产者消费者问题的C代码：

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

#define BUFFER_SIZE 10

pthread_mutex_t mutex;
pthread_cond_t buffer_not_full;
pthread_cond_t buffer_not_empty;

int buffer[BUFFER_SIZE];
int counter;

void *producer(void *arg) {
    int item = 0;
    while (1) {
        pthread_mutex_lock(&mutex);
        while (counter == BUFFER_SIZE) {
            pthread_cond_wait(&buffer_not_full, &mutex);
        }
        buffer[counter++] = item;
        printf("Producer produced %d\n", item++);
        pthread_cond_signal(&buffer_not_empty);
        pthread_mutex_unlock(&mutex);
        sleep(1);
    }
}

void *consumer(void *arg) {
    int item;
    while (1) {
        pthread_mutex_lock(&mutex);
        while (counter == 0) {
            pthread_cond_wait(&buffer_not_empty, &mutex);
        }
        item = buffer[--counter];
        printf("Consumer consumed %d\n", item);
        pthread_cond_signal(&buffer_not_full);
        pthread_mutex_unlock(&mutex);
        sleep(1);
    }
}

int main() {
    pthread_t producer_thread, consumer_thread;

    pthread_mutex_init(&mutex, NULL);
    pthread_cond_init(&buffer_not_full, NULL);
    pthread_cond_init(&buffer_not_empty, NULL);

    pthread_create(&producer_thread, NULL, producer, NULL);
    pthread_create(&consumer_thread, NULL, consumer, NULL);

    pthread_join(producer_thread, NULL);
    pthread_join(consumer_thread, NULL);

    pthread_mutex_destroy(&mutex);
    pthread_cond_destroy(&buffer_not_full);
    pthread_cond_destroy(&buffer_not_empty);

    return 0;
}