linux 进程间 mutex

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>

int main() {
    pthread_mutex_t *mutex;
    char *mutex_name = "/my_named_mutex";

    // 创建命名互斥锁
    mutex = (pthread_mutex_t *)malloc(sizeof(pthread_mutex_t));
    if (pthread_mutex_init(mutex, NULL) != 0) {
        printf("Mutex init failed
");
        return 1;
    }

    // 尝试获取互斥锁
    if (pthread_mutex_lock(mutex) != 0) {
        printf("Mutex lock failed
");
        return 1;
    }

    // 临界区开始
    printf("Mutex locked, entering critical section...
");
    sleep(5); // 模拟临界区操作
    printf("Exiting critical section...
");

    // 释放互斥锁
    pthread_mutex_unlock(mutex);

    // 销毁互斥锁
    pthread_mutex_destroy(mutex);
    free(mutex);

    return 0;
}