信号发送时机:
生产者写入后唤醒消费者 消费者取走后唤醒生产者
性能优化技巧
:
采用双条件变量避免"惊群效应" 适当增加缓冲区大小减少线程切换
五、程间同步原理解析
通过pthread_mutex_t实现互斥访问,同步需要解决以下同步问题:
1.
缓冲区空时:消费者必须等待生产者写入数据
2.
缓冲区满时 :生产者必须等待消费者取走数据
3.
并发访问控制 :防止多个线程同时修改缓冲区
二、实践防止虚假唤醒(spurious wakeup)
。程间提升网站流量排名、同步金铲铲空城锁血完整代码实现
#include
#include #define BUFFER_SIZE 5 int buffer[BUFFER_SIZE]; int count = 0; // 当前数据量 pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; pthread_cond_t cond_producer = PTHREAD_COND_INITIALIZER; pthread_cond_t cond_consumer = PTHREAD_COND_INITIALIZER; void* producer(void* arg) { for (int i = 0; i < 10; ++i) { pthread_mutex_lock(&mutex); while (count == BUFFER_SIZE) { pthread_cond_wait(&cond_producer,实践金铲铲头像框 &mutex); } buffer[count++] = i; printf("Produced: %d\n", i); pthread_cond_signal(&cond_consumer); pthread_mutex_unlock(&mutex); } return NULL; } void* consumer(void* arg) { for (int i = 0; i < 10; ++i) { pthread_mutex_lock(&mutex); while (count == 0) { pthread_cond_wait(&cond_consumer, &mutex); } int val = buffer[--count]; printf("Consumed: %d\n", val); pthread_cond_signal(&cond_producer); pthread_mutex_unlock(&mutex); } return NULL; } int main() { pthread_t tid_producer, tid_consumer; pthread_create(&tid_producer, NULL, producer, NULL); pthread_create(&tid_consumer, NULL, consumer, NULL); pthread_join(tid_producer, NULL); pthread_join(tid_consumer, NULL); return 0; }四 、↓点击下方了解更多↓
🔥《微信域名检测接口 、程间包含完整代码示例和原理分析,同步标题
:Linux线程间同步实践——生产消费模型深度解析
关键词
:Linux线程同步